Which versioning approach uses URL paths like /v1/events and is the most common due to explicit routing?

Which versioning approach uses URL paths like /v1/events and is the most common due to explicit routing?

• A. URL versioning is the most common approach
• B. Header versioning is the simplest for routing
• C. Query parameter versioning is always preferred
• D. Body versioning is standard

Answer: (A)

URL path versioning embeds the version directly in the route, like /v1/events. This makes the versioning explicit in the API’s addressing, so the routing layer can dispatch to the correct code path without inspecting headers or query parameters. It’s popular because it’s simple, predictable for clients, and easy for caches and CDNs to treat as separate resources, reducing cross-version confusion. You can retire an old path (like /v1/…) cleanly while continuing to support newer versions at /v2/… and beyond. Other approaches require routing logic to look at headers or query strings, which hides the version from the URL and can complicate caching and visibility. Versioning in the body is not practical for routing and standard API design, since the version should influence routing and resource addressing, not the request payload structure.

URL path versioning embeds the version directly in the route, like /v1/events. This makes the versioning explicit in the API’s addressing, so the routing layer can dispatch to the correct code path without inspecting headers or query parameters. It’s popular because it’s simple, predictable for clients, and easy for caches and CDNs to treat as separate resources, reducing cross-version confusion. You can retire an old path (like /v1/…) cleanly while continuing to support newer versions at /v2/… and beyond.

Other approaches require routing logic to look at headers or query strings, which hides the version from the URL and can complicate caching and visibility. Versioning in the body is not practical for routing and standard API design, since the version should influence routing and resource addressing, not the request payload structure.