MVP planning
SRS in Software Engineering: A Practical MVP Checklist
By Haris Ahmed · Code Huddle · Product engineering guides
SRS stands for software requirements specification. It records what software must do and the constraints under which it must operate. For an MVP, keep it proportionate: enough detail to agree the first release, estimate the work, and verify the outcome without pretending every future feature is already known.
What an SRS should make clear
An SRS gives product, engineering, and testing a shared reference for the required behavior. ISO/IEC/IEEE 29148 addresses requirements engineering and related information items; the checklist here is a practical starting point, not a claim of conformance to that standard.
A backlog lists work to do. The requirements explain why it is needed, how the software should behave, and what will count as correct. Link the two so a change in the scope is visible in both.
A compact SRS structure for a first release
Organize the document around the actual product and make assumptions visible. Give requirements stable identifiers so discussions and test results can point to the same behavior.
- Purpose: target users, customer problem, and release objective.
- Scope: included workflows, exclusions, and later ideas.
- Roles: what each user can read, create, change, or approve.
- Functional requirements: inputs, steps, outputs, and error states.
- Data and integrations: ownership, external systems, and dependencies.
- Quality requirements: measurable performance, accessibility, and recovery expectations.
- Acceptance criteria: examples that demonstrate each requirement.
- Open questions: assumptions, decision owners, and change process.
Worked example: a parking reservation MVP
Suppose a first release lets a renter reserve an available parking space. The examples below are illustrative requirements, not the original ParkingHub specification or a statement about its contracted MVP scope.
| Requirement | Expected behavior | Acceptance example |
|---|---|---|
| BOOK-01: reserve a space | Only an available slot can be confirmed | Two renters request the same slot; at most one confirmed reservation is created |
| ACCESS-01: view reservations | A renter sees their own bookings | A different renter cannot read the booking by changing its ID |
| PAY-01: reconcile payment | Repeated payment events do not duplicate a booking | Deliver the same successful payment event twice and verify one reservation |
| OPS-01: recover a failed request | A renter can determine whether the booking succeeded | Interrupt the confirmation response and verify the status can be retrieved safely |
Use the SRS to estimate and review changes
Ask the development team to map its estimate and release plan to the requirements. Identify missing integration access, uncertain data, and decisions needed before implementation. Give uncertain items an investigation milestone rather than silently treating them as solved.
When a feature changes, record the effect on scope, acceptance criteria, effort, and schedule. Review the first release against the agreed requirements, then use user feedback to decide what belongs in the next iteration.