How do you optimize a CI/CD pipeline that has grown slow due to an expanding test suite? What techniques do you use to maintain fast feedback without sacrificing test coverage?

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A slow CI/CD pipeline is a productivity killer that compounds over time. When the feedback loop exceeds 10 to 15 minutes, developers stop waiting for results, merge without verifying, and defects slip through.

How do you optimize a CI/CD pipeline that has grown slow due to an expanding test suite? What techniques do you use to maintain fast feedback without sacrificing test coverage?

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