Moving from Waterfall to Agile testing is not mainly a change in test tools or terminology. It changes when testing happens and who participates: instead of sending completed development to QA late in the process, testers help clarify work early and test alongside development, with quality checks completed within each increment where practical. That shift can reduce handoff delays, but it does not automatically make software faster or better; teams have to change how work, evidence, and approvals are managed.
What changes when testing moves from Waterfall to Agile?
In a sequential Waterfall-style workflow, requirements, development, and testing may be organized as distinct phases. QA can receive a large body of completed work near the end, when defects are more expensive to diagnose and there may be little time to fix them. In an Agile team, testing is part of delivery: testers contribute while requirements are clarified, development is underway, and an increment is being completed.
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This is a change in collaboration and timing, not simply a shorter test phase. Agile practices do not guarantee higher quality or faster delivery. Outcomes depend on the product, team, dependencies, and constraints. The Agile Manifesto provides values, not a promise that adopting a framework will produce a particular result.
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Testing becomes shared work
QA specialists still bring valuable testing expertise, but they are not the sole owners of quality. Developers, product decision-makers, testers, and other relevant specialists work from shared goals and feedback. A Marchex experience report describes teams that adopted boards and iterations but still coded first and tested afterward; bottlenecks, inconsistent releases, and QA overtime continued. Unifying Dev and QA boards and retrospectives was an early step toward a more genuine partnership. Read the Marchex report.
Testing is planned inside the increment
Test design, execution, and defect resolution need capacity in the team’s plan rather than being deferred to a later phase. The team should agree what “done” means for its work, including relevant checks and evidence. Not every kind of testing can always fit into one iteration: large integrations, external approvals, or release-level validation may require coordination beyond the team.
Why do Waterfall and Agile teams sometimes struggle together?
A mixed-methods project can inherit both the Agile team’s iterative delivery and the organization’s sequential handoffs. An Agile team may finish a slice of work before a Waterfall group can provide an environment, integration, decision, or approval. Conversely, QA may be asked to test late because upstream requirements or release evidence were not addressed early.
An Agile Alliance report on Agile QA working with Waterfall teams describes how reviewing work early let its team start test cases sooner and identify risks before late-stage QA. It also notes a gap: required test evidence and release documentation were not initially accounted for. Read the mixed-methods QA report.
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- Identify who can clarify requirements, accept work, and make product decisions.
- List the teams that provide environments, integrations, data, security review, or release approval.
- Agree when those teams need requests and what evidence they require.
- Track waiting and blockers on the same view as development and testing work.
If a dependency cannot be made iterative immediately, plan around its real lead time. Do not label a story complete when it is still waiting for a required external test or approval.
A practical sequence for changing the testing process
1. Agree on the problem the transition should solve
Start with a specific delivery or quality problem: late defect discovery, QA queues, unclear acceptance, release evidence created under time pressure, or another observed constraint. Include the people who own product decisions and those required to approve releases. In a public-sector criminal-justice case, joint customer-contractor commitment and whole-team training were deliberate startup choices, not incidental details. See the criminal-justice transition report.
2. Put development and QA work in one shared view
Use one board or equivalent workflow to show each item’s acceptance conditions, development, testing, blockers, and current status. Separate Dev and QA boards can preserve the very handoff the change is meant to address. Make work waiting for an environment, review, or evidence visible rather than disguising it as progress.
3. Bring QA into clarification and acceptance
Before implementation is far advanced, have testers help examine examples, edge cases, risks, and test-data or environment needs. Agree on acceptance criteria early enough to guide development, and refine examples as the team learns. This is not a demand for perfect upfront specification; it is a way to discover uncertainty before it becomes a late-stage surprise.
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Include test design and execution in the iteration plan and define appropriate completion criteria. Coordinate with teams outside the Agile group where environments, integration windows, or release approvals cannot be controlled locally. For regulated or contractual work, identify mandatory evidence up front and decide who creates, reviews, and retains it.
5. Improve repeatable regression checks over time
Prioritize automation for valuable checks that recur frequently, but treat automation as an investment in code, environments, and maintenance. In the criminal-justice case, regression risk grew in a mature system and the team committed to automation; during the transition it continued to rely heavily on expert manual testers while coverage was being built. The report also says automation might have been adopted regardless of lifecycle choice. Automation is neither a quick replacement for skilled testers nor a prerequisite for Scrum.
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6. Use retrospectives to change the system
Look for where work waits, defects cluster, or approvals arrive too late. Choose a small process change to test in the next iteration, then check whether it helped. The Marchex and public-sector rescue reports both describe retrospectives or continuous learning as part of their transition accounts. Read the public-sector rescue report.
How should you choose a transition pattern?
There is no single transition sequence that fits every organization. A broad reset may be possible when leaders can change governance and teams have capacity to work cross-functionally. A gradual transition may fit better when contracts, legacy systems, or release controls cannot be changed at once. A hybrid approach can preserve formal gates while changing how teams execute work between them.
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| Approach | What changes | When it may fit | Trade-off to manage |
|---|---|---|---|
| Broad reset | Teams and governance shift more comprehensively toward iterative delivery. | Decision-makers can change approval practices and teams can coordinate across roles. | Requires organizational alignment and attention to dependencies, documentation, and legacy integration. |
| Gradual team transition | Teams adopt shared planning, early QA involvement, and testing within increments while wider processes evolve. | Some release or contractual constraints cannot change immediately. | Unchanged external handoffs can still create queues and late testing. |
| Phase-based hybrid | Formal stages and gates remain, but a defined segment uses iterative execution and more just-in-time planning. | Governance requires gates but teams have discretion over execution within a phase. | It is a reported compromise, not a universal definition of Agile; the boundaries between iterative work and gates must be explicit. |
Case reports illustrate different possibilities rather than deadlines to copy. Scrum Alliance’s Mayden case says the company moved all product-development teams to Scrum in six months; the accessible page does not establish a publication year. Read the Mayden case study. A separate phase-based report describes retaining mandatory stages and gates while inserting a Scrum execution phase. Read the phase-based Agile report.
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Compare the constraints before choosing
- Authority to change governance and release approvals.
- Regulatory, contractual, and documentation obligations.
- Legacy integration complexity and test-environment stability.
- Existing automation coverage and the cost of maintaining it.
- Availability of product decision-makers and cross-functional capacity.
- How much coordination is required with teams that remain on Waterfall.
Documentation, evidence, and compliance still matter
Agile does not mean deleting required documentation. In the criminal-justice program case, extensive user documentation and some technical documentation remained necessary; the team reduced manually maintained material gradually and used generated reports where suitable. The case team reported spending more than 15% of total team effort maintaining documentation over the previous 18 months, and nearly 50% of business-user-story effort on emergent stories outside the initially identified scope. Those figures describe that project only; the accessible report text does not establish its year. The report explains its documentation lessons.
For a team in transition, the useful question is not “Which documents can Agile eliminate?” but “Which information must exist, who needs it, and can we produce it with less duplication?” Preserve required evidence, clarify ownership, and automate generation only when the resulting artifact meets the relevant need.
What reported results can—and cannot—tell you
Experience reports show that teams have made different choices under different constraints. They do not prove that the same practice will deliver the same result elsewhere.
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- Mayden’s six-month move to Scrum is one company’s case, not a recommended schedule. Read the case study.
- The criminal-justice report describes gradual change, continued expert manual testing, and documentation that could not simply be discarded. Read the case report.
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Frequently Asked Questions
Does Agile require a dedicated QA person on every team?
The experience reports support QA participation in team delivery but do not establish a universal staffing model; responsibilities depend on the product and team.
Can a team use Scrum while retaining Waterfall release gates?
Yes, one reported phase-based approach retained mandatory gates while using Scrum-style execution within a defined phase; it is a context-specific compromise.
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