All APIs must follow a defined versioning strategy, whether semantic versioning or date-based versioning, with clear policies for how versions are communicated, how consumers are migrated, and how multiple versions are maintained during transition periods.
API Versioning Follows a Defined Standard
Policies
Versioning
Versioning is how you communicate change to consumers. Whether you use semantic or date-based, being explicit about your versioning strategy and sticking to it builds confidence that change is mana...
Semantic Versioning
Semantic versioning with major, minor, and patch numbers is the approach I see most often. It communicates the scope of change clearly -- breaking, feature, or fix.
Date-Based Versioning
Date-based versioning ties API changes to specific calendar dates. I see this approach working well for APIs where consumers want predictable release schedules they can plan around.
Version of APIs
Version information in your OpenAPI tells consumers which release they are looking at. Whether you use semantic versioning or date-based, having it in the spec is how you communicate where things s...
Breaking Changes
Breaking changes are the thing consumers fear most. Defining what counts as breaking, how it gets reviewed, and how it gets communicated is essential for maintaining trust across the API landscape.
Migration Guides
Migration guides are what consumers need when you ship a new version. Step-by-step instructions, breaking change summaries, and code examples make the difference between a smooth transition and a p...
Experiences
Change
Change is the one constant across the API landscape, and I watch teams struggle with it every single day. If you aren't actively managing and communicating change across versions, deprecations, and...
Stability
Stability is what consumers are really asking for when they evaluate your API. I see breaking changes, outages, and weird behavioral shifts erode trust fast. If people can't depend on your API for ...
Communication
I struggle with how little communication happens between the teams producing APIs and the people consuming them. Blogs, changelogs, roadmaps -- these are building blocks that most teams just skip, ...
Consistency
When I look across the API landscape, consistency is one of the biggest challenges I see. Every team does things differently, and the surface area of inconsistency just grows until governance becom...
Trust
Trust is earned at the API level, and I see it broken constantly. When consumers don't trust that your API will be there tomorrow, behave the same way it did yesterday, and protect their data, they...