API Versioning Strategies: URL Path, Query Params, and Headers Compared

Every API evolves. Fields get renamed, endpoints get restructured, response shapes change. If you have clients depending on your API, breaking changes are a serious problem — and versioning is the mechanism that lets you ship those changes without burning everyone downstream.

The trouble is, there's no single "right" way to version an API. Three patterns dominate the industry, each with real trade-offs. Let's break them down with concrete examples so you can make an informed choice.

Strategy 1: URL Path Versioning

The most common approach embeds the version directly in the URL path: