The text discusses the importance of merging API specifications from multiple microservices into a single unified interface to ease API integration and maximize API adoption rates. It highlights how APIMatic can be used to automatically merge these specifications, generating an API developer portal with client SDKs, language-specific documentation, live code samples, and more. The process involves creating a local directory structure for the specifications, adding configuration metadata files, zipping the contents into a ZIP file, uploading it to APIMatic, and previewing the generated developer experience portal. The merged output includes combined API descriptions, servers, authentication schemes, models, endpoints, and useful links, demonstrating how APIMatic can simplify the process of merging microservice specifications.