Remote-work systems writer focused on practical approval routing, asynchronous decision flow, and low-friction document workflows for distributed teams.
Contact: seungeunisfree@gmail.com
When I choose between a sequential vs parallel approval workflow, I do not start by asking which one sounds faster.
I start by asking whether one decision depends on another.
That question changes everything.
Some remote document approvals have a natural order. One person needs to approve the content before another person decides whether the document can be released. A budget owner may need to accept a commitment before a senior owner signs off on the final package. A specialist may need to confirm a technical condition before another role can make a broader business decision.
In those situations, sending every approval at the same time can create confusion.
The later approver may be looking at a version that is not truly ready for them. They may spend time reviewing something that will change after the first decision. They may also believe the earlier issue has already been resolved simply because the document reached them.
Other approvals do not have that dependency.
Two specialists may be able to evaluate the same stable document independently. One person may check whether the operational process is acceptable while another checks whether the communication is ready. Neither person's judgment needs the other person's answer first.
Making those people wait in a line adds time without adding clarity.
That is when parallel approval becomes useful.
I use sequence when a later decision depends on an earlier decision. I use parallel routing when the approvers can evaluate the same stable version independently.
I also keep another distinction in mind.
Sequential versus parallel describes when approvers receive the decision.
It does not, by itself, tell me how many approvals are required for completion.
A parallel route can require every assigned approver to respond.
Another parallel route may allow one authorized person from a group to make the decision.
Those are different completion rules even though the requests may be sent at the same time.
Likewise, a sequential route is not automatically better simply because it looks controlled.
If three people can make independent decisions, placing them in a sequence may multiply waiting time without improving the result.
My goal is therefore not to choose one routing style for every document.
I want the route to reflect the real decision dependencies.
When I get that right, the workflow usually becomes easier to understand and easier to track.
Start With Decision Dependency, Not Workflow Appearance
I ask whether one approver needs the result of another approver's decision
When I map a document approval route, I try to ignore the organizational chart for a moment.
I look at the decisions themselves.
Does approver B need something from approver A before B can make a responsible decision?
If the answer is yes, I probably have a sequencing need.
If the answer is no, I ask why B should wait.
That simple question helps me distinguish real dependencies from habits.
Sometimes teams route documents sequentially because that is how the process has always been described.
A file goes to one manager, then another manager, then another person, even though each one is evaluating a different independent issue.
The sequence looks orderly.
It may also add several unnecessary waiting periods.
The opposite problem happens too.
A team sends a final document to everyone at once because parallel routing feels efficient.
One approver then finds a blocking issue that changes the document significantly.
The other approvers have already spent time reviewing a version that no longer exists.
Speed at the beginning created rework later.
I distinguish decision dependency from seniority
A senior title does not automatically create a later approval stage.
I want to know what the person is deciding.
If a senior owner is making the final release decision only after a subject-matter condition has been accepted, the order may be meaningful.
If the senior owner and a specialist are independently checking different criteria on the same stable version, sequence may be unnecessary.
I do not use hierarchy as a substitute for workflow logic.
This matters in remote teams because every additional handoff can add invisible calendar time.
A document may sit for hours before the first approver sees it.
After approval, it may wait again before the second person begins.
If the second decision truly depends on the first, that waiting may be justified.
If it does not, I have created delay without creating a better decision.
I map the decision question for each approver
I find routing much easier when every approver has a specific question.
For example:
Can the technical owner confirm that the instructions are accurate?
Can the project owner accept the scope?
Can the release owner authorize publication?
Those questions show whether there is a dependency.
If the release owner should not authorize publication until the technical condition is confirmed, I have a sequence.
If two subject-matter owners can evaluate unrelated criteria on the same version, I may have a parallel stage.
This is much clearer than drawing arrows between job titles before I understand what each person actually contributes.
The next approver should not make their decision until a previous approval has established a condition, confirmed a prerequisite, or moved the document into a new decision state.
Several approvers can evaluate the same stable version independently because none of their decisions requires another approver's result first.
I choose the route from the relationship between decisions, not from the number of job titles involved.
Before I choose sequential or parallel approval, I define the decision each person owns. If one decision requires another decision first, I use sequence. If the decisions are independent, I consider parallel routing.
Choose Sequential Approval When Order Changes the Decision
I use sequence when an earlier approval creates a prerequisite
A sequential approval works best when each step has a reason to wait for the step before it.
The clearest case is a prerequisite.
Suppose a document contains a technical recommendation and a final business commitment.
The business owner may not want to approve the commitment until a technical owner has confirmed that the recommendation is feasible.
The technical approval changes the state of the decision.
Before that approval, the business owner is evaluating a proposal with an unresolved technical condition.
After it, the business owner can make a different and better-defined decision.
That is a real reason for sequence.
Microsoft Power Automate's current documentation describes sequential approvals in similar structural terms: requests are sent one at a time in a specified order, and each approver responds before the request moves to the next person in the sequence.
Official reference: Microsoft Learn — Get started with approvals
I use sequence when the document may legitimately stop early
Sequential routing can also save effort when an early rejection should stop the process.
Imagine that the first approval determines whether the document satisfies a required condition.
If it does not, there may be no reason for the later approvers to spend time on the file yet.
I would rather return the document for revision early than ask several people to review a version that cannot proceed.
This is one of the important differences between thoughtful sequencing and ceremonial hierarchy.
A good sequence eliminates unnecessary later work when an earlier condition fails.
A bad sequence simply makes people wait because someone once decided that every approval should happen in a chain.
I use sequence when later approvers need earlier context
Sometimes the dependency is not only yes or no.
An earlier approver may add context that the later decision owner needs.
For example, a process owner may approve a proposed operating method and identify one condition that must remain in the final implementation.
The final owner then makes their decision with that accepted condition visible.
If I sent both approvals at the same time, the final owner might decide before the condition is known.
I would then need to ask whether their earlier approval still applies.
Sequential routing prevents that ambiguity.
Microsoft also provides a dedicated example for sequential approvals in Power Automate in which one manager approves before the request moves to the next manager.
Official reference: Microsoft Learn — Set up sequential approvals
I keep the sequence as short as the dependency allows
Once I decide that sequence is necessary, I still challenge every step.
Does approver three really need approver two's decision?
Does approver four own a distinct decision?
Could two middle approvals happen together after the first prerequisite is satisfied?
A sequential workflow becomes fragile when it grows simply because each new stakeholder is added to the end.
Every stage creates another handoff.
Every handoff can create another delay.
Every additional approval can also increase the chance that responsibility becomes unclear.
I therefore use sequence deliberately, not automatically.
A later decision should not happen until an earlier owner confirms a condition that changes what the later approver is deciding.
If an early rejection means the document must return for revision, sequence can prevent later approvers from reviewing work that cannot yet proceed.
An earlier decision creates information, conditions, or accepted boundaries that the next approver needs before acting.
A final owner signs off only after the required specialist, process, or scope decisions have already been completed.
I do not place someone later in the route merely because they are more senior. I want every sequential step to answer why that person must wait for the earlier decision before making their own.
I choose sequential approval when an earlier decision changes, enables, or constrains the next decision. The order should carry information or remove uncertainty, not simply reflect hierarchy.
Choose Parallel Approval When Decisions Are Independent
I use parallel routing when everyone can evaluate the same stable version now
Parallel approval is useful when waiting creates no decision value.
I ask whether each approver could receive the same document at the same moment and make a responsible decision without knowing another approver's answer first.
If yes, parallel routing may be the cleaner choice.
Suppose one approver is responsible for operational readiness and another is responsible for communication quality.
If both are examining the same stable final draft and their criteria are independent, I do not need to make the communication owner wait for the operations owner.
They can evaluate the document during the same window.
That reduces calendar delay without removing either decision.
The important phrase is “same stable version.”
Parallel approval works poorly when people are effectively reviewing different states of the document.
If one person's feedback is expected to trigger substantial edits while another person is already approving the current version, I have mixed review and approval in a way that can make the final status hard to trust.
I decide whether everyone must approve or one response is enough
Parallel does not automatically mean unanimous.
This is an important distinction in document approval routing.
Sometimes several independent owners each control a real decision.
In that case, the process may need every required approver to say yes before the document moves forward.
At other times, several people are equivalent decision owners and one authorized response is sufficient.
For example, a team may have several people who can legitimately approve the same routine request, and the workflow only needs one of them to act.
Those are different rules.
Microsoft Power Automate's current approval options make that distinction visible. Its documentation includes an “Everyone must approve” behavior as well as a “First to respond” behavior for requests assigned to multiple approvers.
Official reference: Microsoft Learn — Get started with approvals
I treat that as a separate design question from sequential versus parallel.
First I decide whether the approvals can happen at the same time.
Then I decide what response pattern actually completes the stage.
I use parallel routing to reduce waiting, not to hide unclear responsibility
Parallel approval can look efficient because multiple requests leave at once.
That does not automatically make the workflow good.
If the approvers do not know what each person owns, the document may still stall.
One person may assume another approver is checking the exact same issue.
Two people may both believe the other person's approval is the one that really matters.
Someone may reject the document for a reason that another person believed was outside that approver's scope.
I avoid that by giving each approval a defined decision question even when the requests are sent simultaneously.
Parallel routing removes unnecessary order.
It should not remove ownership.
I check whether one approval could invalidate the others
Before I send parallel approvals, I imagine one person rejecting the document.
Would that rejection require a substantial change?
Would the other approvals still mean anything after that change?
If the answer is no, I look more carefully at the route.
A parallel stage can still be reasonable if all approvers need to evaluate the same version and a rejection simply returns the document for revision.
However, if one approver's decision regularly changes the substance before the others should act, that approval may belong earlier in a sequence.
I want parallel decisions to be genuinely independent, not merely simultaneous.
I choose parallel approval when approvers can evaluate the same stable version independently. I separately define whether every response is required or whether one authorized response completes the stage.
Avoid False Sequencing and False Parallelism
False sequencing makes independent decisions wait for no reason
A workflow can be too sequential.
I see this when each new stakeholder is added to the end of the route even though that person's decision has no dependency on the earlier steps.
The process may look controlled because the document moves neatly from one person to another.
The waiting is real, but the logic is not.
Imagine three independent approvers in different time zones.
The first person receives the document, responds later in their workday, and only then does the second person receive it.
The second person's response triggers the third.
The content did not become more useful between those decisions.
The route simply converted independent work into calendar delay.
When I see that pattern, I ask whether those approvals can share a parallel stage.
False parallelism sends later decisions too early
The opposite mistake is more subtle.
A team wants speed, so every approver receives the document at once.
One of those people actually owns a prerequisite decision.
Another person is supposed to make a final decision only after that prerequisite is resolved.
Now both are acting on the same draft as though their decisions are independent.
If the prerequisite owner rejects or changes something important, the later approval may need to be repeated.
The workflow appeared fast because all the notifications went out at once.
The actual decision process became slower because part of it had to be done twice.
I call that false parallelism.
I watch for approvals that are really reviews
Routing problems often begin because the team has not separated review from approval.
If one person is expected to edit the draft, another person is expected to suggest improvements, and a third person is expected to authorize the final version, those are not three equivalent approvals.
The first two activities may belong in review.
The final decision may belong afterward.
If I treat all three as approval steps, I create a route that is difficult to reason about.
The document can keep changing while people are supposedly approving it.
Recorded approvals can become disconnected from the content they were meant to cover.
I therefore stabilize the document before I optimize the routing.
I do not make every stakeholder an approval gate
Another routing mistake is using approval to provide visibility.
If someone only needs to know the outcome, I can inform them after the decision.
If someone has useful input, I can involve them during review.
If someone owns no decision that can block or authorize the next step, I question why the document should wait for their approval.
This matters in both sequential and parallel workflows.
An unnecessary sequential approver adds waiting.
An unnecessary parallel approver adds another response that may be tracked, chased, or misinterpreted.
Removing a meaningless approval can improve the workflow more than changing its routing style.
I send the document through the same chain every time or notify everyone at once without checking whether the decisions actually depend on each other.
I identify prerequisites, independent decisions, final authorization, and unnecessary approval gates before choosing where sequence or parallel work belongs.
If an early decision is likely to change the document or determine whether later approval is relevant, simultaneous routing can create duplicate review and invalid approvals. I optimize for decision flow, not notification speed.
I avoid sequence without dependency and parallel routing without independence. Before changing the route, I also remove approvals that are really review, consultation, or simple visibility.
Build a Hybrid Multi-Step Approval Workflow When One Pattern Is Not Enough
I do not force an entire workflow to be sequential or parallel
Many real document processes contain both kinds of logic.
That is why I often prefer a hybrid multi step approval workflow.
A document may first need one prerequisite decision.
After that condition is satisfied, two independent specialists may be able to approve in parallel.
Once both of those decisions are complete, a final owner may provide the release authorization.
That is not a contradiction.
It is a route that follows the real dependency structure.
I find this more useful than labeling an entire process “sequential” just because some stages happen in order.
The important unit is the decision stage.
I group independent decisions into the same stage
When several decisions share the same prerequisite and do not depend on one another, I consider putting them into a parallel stage.
For example, once a project scope has been accepted, an operations owner and a communication owner may be able to evaluate the final document independently.
If both approvals are required, the workflow waits for both.
If only one authorized member of a specific group needs to respond, I define that rule explicitly.
Once the stage is complete, the route can move forward.
This creates a useful balance.
I preserve the order where order matters.
I remove the order where it does not.
I keep the final decision separate from specialist approvals when the responsibility is different
A specialist approval and a final authorization may answer different questions.
One tells me that a required condition is satisfied.
The other tells me that the document can now move into its final next state.
I do not collapse those decisions simply to shorten the route on paper.
If the final owner is genuinely accountable for the release, that decision deserves to remain visible.
At the same time, I do not ask the final owner to repeat every specialist check.
The earlier approvals exist so the final owner can make their decision with the required conditions already resolved.
I define what happens when any stage rejects the document
A hybrid workflow becomes confusing if nobody knows where a rejection sends the document.
Does the file go back to the author?
Does the whole workflow restart?
Do only the affected approvers need to decide again?
Does a material change invalidate earlier approvals?
The answer depends on the organization's process and the significance of the change.
I do not invent a universal rule.
I do make the expected return path visible before the workflow starts.
That prevents people from improvising after a rejection, when the project is already under time pressure.
I do not force complex document routing into one pattern. I build stages: sequential where dependency exists, parallel where decisions are independent, and a final approval only where a distinct final authorization is actually needed.
Route Approvals Across Remote Teams and Time Zones
I remember that sequence multiplies waiting across asynchronous schedules
Sequential approval has a hidden cost in remote work.
Each stage can add not only review time but waiting time.
The next approver may not even know the request exists until the previous person responds.
If the people work in different regions, one completed approval can arrive near the end of another person's workday.
The document then waits until that person returns.
With several sequential stages, those gaps can accumulate.
That does not mean I should eliminate sequence when the dependency is real.
It means I should understand its cost and avoid adding sequential steps casually.
I use parallel routing to remove unnecessary calendar gaps
Parallel routing can reduce elapsed time because independent approvers can work during the same period.
This is especially useful in distributed teams.
One approver may respond during their workday while another person begins several hours later.
Both can still work within the same approval stage.
I do not need the second person to wait for a response they do not depend on.
However, parallel routing does not guarantee a quick finish.
If every approval is required, the stage is still limited by the last required response.
Parallel routing removes unnecessary ordering.
It does not remove the need for every required owner to act.
I give each stage its own deadline and owner
A multi-stage route becomes difficult to manage if the entire workflow has only one final deadline.
I want to know when each meaningful stage should finish.
If stage one is a prerequisite for stage two, I need enough schedule between them for the later decision to happen properly.
If stage two contains parallel approvals, I want those approvers to share a clear response window.
If the final authorization follows, I give that owner a real decision window instead of delivering the file at the last possible moment.
This also makes status easier to understand.
I can tell whether the document is waiting because stage one has not finished, because one parallel approver is still pending, or because final authorization has not yet begun.
I avoid changing the document quietly during parallel approval
Parallel approval depends on a shared understanding of what is being approved.
If the document changes substantially while several people are deciding, their responses may no longer refer to the same content.
That is especially risky in asynchronous teams because one person may have approved the earlier version hours before another person opens the updated file.
I therefore decide how material changes affect approval before the stage starts.
Some platforms provide controls around this.
Google Drive's approval documentation, for eligible accounts, explains that when the option requiring all approvers to review the same content is used, document edits can reset existing approvals so the changed content can be reviewed again.
Official reference: Google Drive Help — Get approvals on files in Google Drive
I do not treat that exact behavior as a universal workflow rule.
I use it as a reminder of the larger principle: an approval should refer to an identifiable content state.
Every stage can add another waiting period, especially when the next approver does not receive the request until a previous time zone has finished.
Independent approvers can evaluate the document during the same stage, reducing unnecessary calendar gaps while preserving their separate decisions.
I give each meaningful stage a clear owner, response window, and completion rule so I know exactly where the document is waiting.
I make sure required approvers are deciding on the intended content state and define what material changes do to existing approvals.
In remote teams, sequence can multiply waiting across time zones, while parallel routing can overlap independent decisions. I use stage deadlines and stable document versions so that speed does not come at the cost of clarity.
Run My Final Routing Test Before I Launch the Approval
I ask whether the route explains itself
Before I send the request, I look at the route as if I were one of the approvers.
Can I tell why I am receiving the document now?
Can I tell what decision I own?
If I am in a sequential stage, can I tell what earlier decision has already been completed?
If I am in a parallel stage, can I tell whether other people are making independent decisions at the same time?
Can I tell whether every approval is required?
Can I tell what happens if I reject the document?
If the answers are not obvious, I simplify the route or improve the request.
I test whether removing an approver changes the control
One of my favorite tests is subtraction.
I imagine removing one approval step.
What meaningful decision disappears?
What risk is no longer controlled?
What authorization becomes missing?
If I cannot answer, that step may not belong in the approval workflow.
The person may still need to review the document.
They may still need visibility.
They simply may not need to block the route.
This test helps me keep both sequential and parallel workflows lean.
I test whether changing the order changes the quality of the decision
For a proposed sequential stage, I imagine reversing two approvers.
Would that make the later person's decision less informed?
Would it create a risk that the wrong version is approved?
Would it force a final owner to decide before a prerequisite is known?
If yes, the order probably has value.
If nothing meaningful changes, I question whether those people need to wait for one another.
For a proposed parallel stage, I run the opposite test.
Could any approver's response materially change what another person should be deciding?
If yes, the stage may not be truly parallel.
I keep the routing logic understandable without a meeting
Remote workflows should survive asynchronous work.
I do not want every new participant to require a live explanation of why the approval moves the way it does.
The route should be understandable from the ownership, stage order, decision description, and completion rule.
Microsoft Teams Approvals currently allows requesters to specify who needs to approve and decide approval order when creating a request.
Official reference: Microsoft Support — Create an approval
Whether I use that tool or another platform, I want the routing logic to remain visible rather than living only in the requester's memory.
I remove unnecessary waiting, but I do not collapse real decision dependencies merely to reduce the number of steps. A good route is as simple as the decision logic allows, not simply as short as possible.
My final routing test is simple: every sequence needs a dependency, every parallel stage needs independence, every approver needs a real decision, and every rejection needs an understandable return path.
Frequently Asked Questions About Sequential and Parallel Approvals
In a sequential approval workflow, approvals happen in a defined order and a later approver waits for an earlier step. In a parallel approval workflow, multiple approvers can evaluate the same document during the same stage. I choose between them based on whether the decisions depend on one another.
I use sequential approval when an earlier decision creates a prerequisite, adds context, confirms a condition, or determines whether a later approval should happen at all. The order should improve the later decision rather than simply reflect organizational hierarchy.
Parallel approval is useful when several approvers can evaluate the same stable version independently and none of them needs another person's response first. It can reduce unnecessary calendar delay, especially in remote teams working across different schedules or time zones.
Not necessarily. Routing and completion rules are separate questions. A parallel stage can require all assigned approvers to respond, or a workflow can be designed so one authorized response is sufficient. I define that rule explicitly instead of assuming simultaneous routing automatically means unanimous approval.
Yes. I often use a hybrid multi-step approval workflow when the document has both prerequisites and independent decisions. One approval may happen first, several independent approvals may then run in parallel, and a final authorization may follow after the required stage is complete.
I first determine whether the change is material to what the approvers are deciding. If it changes the substance, I do not assume that earlier approvals automatically cover the new version. The correct response depends on the team's official workflow, but I want all required approvers to be evaluating an identifiable content state.
I remove an approval step mentally and ask what meaningful decision, authorization, or risk control disappears. If I cannot identify one, that person may belong in review, consultation, or visibility rather than formal approval. Every approval should have a clear reason to block or authorize the next stage.
I Choose the Route by Following the Decisions
The biggest mistake I can make with document approval routing is choosing a pattern before I understand the decisions.
A sequence can look organized.
Parallel routing can look fast.
Neither appearance tells me whether the workflow is correct.
I need to know what each person is deciding.
I need to know whether a later decision requires an earlier result.
I need to know whether several people can evaluate the same stable version independently.
I need to know whether every response is required or whether one authorized response is enough.
I also need to know what happens when the document changes or an approver rejects it.
Once I answer those questions, the route becomes much easier to design.
I use sequential approval when order carries decision value.
The earlier step confirms something that the next approver should know, establishes a prerequisite, or determines whether the later decision should happen at all.
I use parallel approval when the decisions are genuinely independent.
The approvers can evaluate the same content during the same stage, so making one person wait does not improve the decision.
And when the workflow contains both kinds of logic, I do not force it into one category.
I build a hybrid route.
That approach is especially valuable in remote work.
Every unnecessary sequential handoff can add another asynchronous delay.
Every careless parallel approval can create another chance for people to approve different document states or repeat work after a prerequisite changes.
The route should therefore be simple, but not simplistic.
I remove waiting that adds no decision value.
I preserve order where dependency is real.
I keep ownership visible.
I keep the document state clear.
And I make sure each approver can understand why the request has reached them at that particular stage.
That is how I think about a reliable sequential vs parallel approval workflow: not as a choice between slow and fast, but as a choice between different kinds of decision logic.
Before I route my next multi-approver document, I will ask one question for every pair of approval steps: “Does the later person actually need the earlier person's decision first?”
If the answer is yes, I preserve the sequence. If the answer is no, I consider whether those decisions belong in the same parallel stage instead.
Sam Na writes about practical remote-work systems for people who need clearer decision ownership, calmer asynchronous collaboration, and lightweight ways to keep shared work moving. His focus is on making document workflows understandable without adding process that does not improve the decision.
Contact: seungeunisfree@gmail.com
This article provides general information for organizing document approvals and remote-work routing. The right approval sequence, parallel stage, completion rule, or return path can vary by organization, role, document type, contract, industry, security requirement, and internal policy. For important decisions or documents involving regulated, legal, financial, contractual, confidential, security-sensitive, or otherwise controlled work, check the applicable official procedures and consult the appropriate responsible professional or authority before changing the workflow.
Official Microsoft documentation describing approval types in Power Automate, including sequential approval, everyone-must-approve behavior, and first-to-respond behavior.
View official Microsoft documentationOfficial Microsoft documentation showing a sequential approval flow in which one approval step is completed before the request moves to the next approver.
View official Microsoft sequential approval documentationOfficial Microsoft Teams documentation explaining that an approval request can identify who needs to approve and define approval order.
View official Microsoft Teams documentationOfficial Google documentation covering document approvals, approval state, document locking, and behavior when content changes during an approval process for eligible accounts.
View official Google Drive documentation