Codefresh has introduced a new feature that allows users to manage environment variables at the composition level rather than the service level, streamlining the process of defining external services. This functionality automatically injects environment variables whenever a new composition is launched, offering a more efficient and centralized way to handle these variables. Users can access this feature by navigating to the Compositions tab and selecting "Variables" in the upper-right corner of the code editor within their Codefresh account, which can be created for free if they do not already have one.