Proposals, SOW & Docs

Software Development SOW Sample: Milestones, Acceptance Criteria & Terms

Marcus Vance
Marcus Vance
Principal RevOps & Data Architect
October 10, 2026 9 min read
TL;DR / Quick Summary

A software engineering SOW requires precise technical acceptance criteria (supported browser versions, API response latencies, test coverage minimums) and bug triage warranty periods.

Drafting Bulletproof Software Acceptance Criteria

Ambiguous terms like "must be fast and intuitive" lead to bitter payment disputes. Specify concrete benchmarks: "Landing page loads within 1.5s on mobile 4G; passes Lighthouse performance score of 90+".

Frequently Asked Questions

How long should a bug warranty period last after handoff?
Standard commercial practice is 30 to 60 days of critical bug fixing post-launch for issues within the original defined scope.
Marcus Vance
Written by Marcus Vance
Principal RevOps & Data Architect
Former data consultant who automated enterprise ETL pipelines, CSV data normalization, and B2B pipeline intelligence models.
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