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Software Development
What is Semantic Versioning?
Quick answer
A version numbering scheme in the form MAJOR.MINOR.PATCH that signals whether a software update adds features, fixes bugs, or breaks compatibility.
Semantic Versioning, explained
Semantic versioning, often written SemVer, gives version numbers a clear meaning. The patch number increases for backward-compatible bug fixes, the minor number for backward-compatible new features, and the major number for changes that may break existing code that depends on the software.
For example, if a payment library moves from 2.4.1 to 2.4.2, developers can expect a safe bug fix. A move to 2.5.0 adds features without breaking anything. A jump to 3.0.0 warns that some functions may have changed or been removed, so upgrading needs testing. Package managers use these rules to decide which updates to install automatically. Semantic versioning only works when maintainers follow it carefully, since a breaking change released as a minor update can cause unexpected failures.
Related terms
Open Source
Software whose source code is publicly available under a license that lets anyone use, study, modify, and share it.
Version ControlA system that records changes to files over time so you can review history, collaborate, and restore earlier versions.
Guides that mention Semantic Versioning
Software Development
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