The text discusses an alternative approach to building mock servers for mobile apps that communicate with a server through HTTP. The authors, at Intercom, implemented their server logic in Go and embedded it into their iOS and Android apps using the Speakeasy tool, which generates AAR files for Android and frameworks for iOS. This allows them to easily test requests that cause data updates in the backend and reduces duplication of work across platforms. By implementing this approach, they have seen benefits such as reduced workload in half when making changes to mock server logic, easier testing of real-time communication, and improved self-containment of their app. The tool is available on Github and can be used by creating a Go package that implements the `speakeasy.Engine` interface, running `speakeasy build`, and adding the server as a dependency in the app.