Technical Due Diligence: A 2-Hour Codebase Audit Before Any Software Rewrite
By
Iurii Rogulia
Summary
A structured guide on conducting technical due diligence before committing to a software rewrite. The author outlines a 2-hour codebase audit method covering architecture, security, technical debt, and cost estimation. The piece emphasizes that no honest quote can be given without first examining the code, and provides a systematic framework for evaluating whether a rewrite is truly necessary, what to look for, and how to scope the work realistically.
Source
bskyTechnical Due Diligence: A 2-Hour Codebase Audit Before Any Software Rewritedev.toKey quotes
· 3 pulledA quote without an audit is a lottery — either I overprice to cover uncertainty I haven't measured, or I underestimate something serious and we both regret it four weeks in.
My answer is always the same: I'll give you a number after I've spent two hours in the codebase. Not before.
Most rewrites fail not because the old system was bad, but because the team didn't understand what the old system actually did.
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