--- title: Automated regression testing: A complete introduction description: Automated regression testing verifies that software hasn't reverted to a broken state after changes. Manual regression testing is slow, error-prone, and... canonical: https://daily.dev/posts/automated-regression-testing-a-complete-introduction-ylcecni2u twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Automated regression testing: A complete introduction | daily.dev og:description: Automated regression testing verifies that software hasn't reverted to a broken state after changes. Manual regression testing is slow, error-prone, and... og:url: https://daily.dev/posts/automated-regression-testing-a-complete-introduction-ylcecni2u og:image: https://api.daily.dev/og/posts/ylcecni2u.png og:image:alt: Automated regression testing: A complete introduction og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Automated regression testing: A complete introduction **[Testim.io](https://daily.dev/sources/testimio)** · 10 min read · 0 upvotes · 0 comments ## Summary Automated regression testing verifies that software hasn't reverted to a broken state after changes. Manual regression testing is slow, error-prone, and costly, making automation essential. Existing unit and integration tests already serve as regression tests. Key best practices include using test management tools, maintaining a testing schedule, writing failing tests for new bugs, categorizing tests, keeping suites up to date, and integrating tests into CI/CD pipelines. Common challenges include test maintenance burden, fragile tests, long execution times, and environment inconsistency. A risk-based approach is recommended when starting out, and slower tests (like E2E) should run less frequently than fast unit tests. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Regression Testing: What it is, why it matters, and how to automate it with CI/CD](https://daily.dev/posts/regression-testing-what-it-is-why-it-matters-and-how-to-automate-it-with-ci-cd-jxfcmsnpm) · CircleCI · 0 upvotes · 0 comments - [Manual Testing vs Automated Testing: What Works Better?](https://daily.dev/posts/manual-testing-vs-automated-testing-what-works-better--sujqwqofe) · Software Testing Magazine · 0 upvotes · 0 comments - [Testing is software engineering](https://daily.dev/posts/testing-is-software-engineering-9un4ckzn6) · thoughbot · 129 upvotes · 6 comments - [Software Testing Practices Evolve to Support Complex Applications](https://daily.dev/posts/software-testing-practices-evolve-to-support-complex-applications-sldsx1bwp) · Software Testing Magazine · 4 upvotes · 0 comments - [Tips for Frontend Work in an Environment with No Tests](https://daily.dev/posts/tips-for-frontend-work-in-an-environment-with-no-tests-besrlyffr) · Atomic Spin · 0 upvotes · 0 comments --- Tags: [#testing](https://daily.dev/tags/testing), [#cicd](https://daily.dev/tags/cicd) [View this post on daily.dev](https://daily.dev/posts/automated-regression-testing-a-complete-introduction-ylcecni2u) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Automated regression testing: A complete introduction","url":"https://daily.dev/posts/automated-regression-testing-a-complete-introduction-ylcecni2u","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/automated-regression-testing-a-complete-introduction-ylcecni2u"},"datePublished":"2026-03-27T14:22:13.048Z","dateModified":"2026-03-27T14:22:41.165Z","description":"Automated regression testing verifies that software hasn't reverted to a broken state after changes. 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