Smoke testing is a quick testing method used to verify whether the core functionality of an application works properly after a new build or deployment. It helps teams detect critical issues early, avoid wasting QA effort on unstable builds, and improve deployment confidence in CI/CD pipelines.

SaaS startups move fast, but rapid deployments can introduce bugs that hurt user trust and retention. End to end testing helps teams validate complete user journeys like signup, payments, and integrations before release. By adopting automated testing early, startups can reduce production issues, ship faster with confidence, and scale their products more reliably.