Software release three-point PERT
This PERT estimate uses optimistic, most likely and pessimistic durations for a software release. Planning releases feature development and documentation, while testing follows the feature build. Approval waits for both tested software and updated documentation before deployment. The three-point values let a delivery team discuss uncertainty instead of pretending every task has a fixed duration. It is a compact model for planning a release window, identifying the longest expected sequence and testing how a delayed build affects the likely launch date. Add review, change-control or monitoring work when it constrains the actual release.
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Scenario
A release team estimates uncertain build and test work.
Key decisions
- Parallel path: Documentation can proceed after planning.
- Test gate: Testing follows feature development.
- Approval gate: Approval requires documentation and testing.
When to reuse this
Use when release durations are uncertain.
Frequently asked questions
Why three values?
What can overlap?
What controls deployment?
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