I’ve been having some thoughts about how we could measure the effectiveness of an agile test process.

One of the measures I think could work is ‘Time to defect’ (TTD). That is the time between a coder injecting a bug into the system and the time the official defect reporting the problem arrives back on their desk. The lower the TTD the better.

A low TTD has many benefits, not only does it indicate that the testers are finding defects quickly, but it also gives the coders the chance to fix the problem when the code is still fresh in their minds.

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