A Developer's Guide to API-First Design

API-first design is a software development approach that emphasizes the creation of application programming interfaces (APIs) as the primary focus before developing other system components such as user interface (UI). This methodology is becoming increasingly important due to its ability to improve scalability, innovation, and adaptability in organizations. By prioritizing APIs, developers can create flexible and modular systems that are easily integrated with diverse systems and services. API-first design offers benefits like faster development times, improved developer experience, and better collaboration and communication among teams. However, it may not be suitable for all projects, particularly those without plans to offer an API or in nascent stages of development. The API-first design process involves several stages such as define, design, develop and document, test, secure, deploy, observe, and evolve. Various tools are available to aid developers in creating effective APIs, including documentation, mocking, testing, and API browsing tools.