Bump has developed a feature called hubs to help users organize and share multiple API specifications or versions in a coherent manner. A hub serves as a centralized group of API documents, allowing users to organize their documentation in any desired format, such as by different endpoints, versions, or microservices. The process involves creating a hub from the Bump Dashboard and adding existing standalone APIs to it, which are then grouped in a root listing called "all documentations." Users can further categorize these documents using the hub category feature to distinguish between active and historical APIs, such as in the example of the JokeAPI, where the creator organized three versions of their API documentation under the hub named "Joke API Creation." This categorization ensures easy navigation and clarity for users visiting the hub, allowing them to track the evolution of the API documentation while maintaining a neat organization as the API develops further.