API versioning, a critical aspect of implementing API gateways, can be managed through URI and header-based methods, both of which are supported by Kong, an API management platform. The blog focuses on RESTful APIs documented with the OpenAPI specification, excluding other protocols like gRPC and GraphQL. It demonstrates how Kong manages API versions using Routes and provides examples using Insomnia to create OpenAPI specifications for different versions of an Order API. The Kong Dev Portal allows for content-level permissions management, facilitating role-based access and lifecycle management of API versions. The blog also covers implementation guidelines for routing requests to the correct version of an API, using URI-based versioning with URL rewriting and header-based versioning. The Konnect ServiceHub acts as a central API repository, incorporating versioning features for service packages, and the decK tool helps migrate configurations between different setups. The blog concludes with an invitation to explore further tutorials and features offered by Kong for API governance and protection.