The 5 principles of API-first development to build an true headless product | Algolia

An API (Application Programming Interface) is a technology that enables two applications to exchange data and functionality. It allows developers to deliver outstanding search and discovery experiences without building the technology from scratch. APIs are foundational in many applications, such as Google Maps Platform, OpenWeatherMap, and Facebook's mobile development tools. API-first development is an approach that centers on the API, making it possible for every action to be performed via a scripting language and ensuring all functionality is available for other systems to leverage. This approach requires developers to think about APIs from the very beginning of product design and involves strong leadership, skilled developers, and customer success functions. API-first development promotes reusability by creating open and accessible APIs that can be easily integrated into microservice architecture and applications. It is a cornerstone of the MACH ecosystem, which advocates for open, best-of-breed technology systems. Companies following this approach include Algolia, BigCommerce, Contentful, MongoDB, and AWS. Transitioning to API-first development requires rethinking and reassessing product design and architecture, as it is a significant change in the way software is developed. Technical leaders should embark on this transformation with their eyes wide open to ensure success and unlock all the benefits of API-first development.