Document Your Spring REST APIs with Annotations

Learn how to document Spring REST APIs using Swagger/OpenAPI annotations like @Tag, @Operation, @Parameter, @ApiResponse, and @Schema. These annotations keep API documentation synchronized with code, making endpoints self-documenting and easier to maintain. The guide includes practical examples of annotating controllers and DTOs, explains why documentation matters for team onboarding and client integrations, and provides a step-by-step approach to gradually adding documentation to existing APIs.