Additionally, APIs are used when programming graphical user interface (GUI) components. A good API makes it easier to develop a program by providing all the building blocks. An application programming interface (API) defines the rules that you must follow to communicate with other software systems.

Two different sets of tools that support the same API specifications are interchangeable to programmers and are the basis for compatibility and interoperability claims. Microsoft’s .NET API specifications are the basis for an open source Linux equivalent middleware package now supported by Microsoft, for example. APIs emerged in the early days of computing, well before the personal computer.

An extraordinarily brief history of APIs

Both XML and JSON are preferred formats because they present data in a way that’s easy for other apps to manipulate. Sharing APIs―with select partners or the whole world―can have positive effects. Each partnership extends your brand recognition beyond your company’s marketing efforts. Opening technology to everyone, as with a public API, encourages developers to build an ecosystem of apps around your API. More people using your technology means more people are likely to do business with you.

OpenAPI establishes a language-agnostic way for developers to build REST API interfaces so that users can understand them with minimal guesswork. APIs are a simplified way to connect your own infrastructure through cloud-native app development, but they also allow you to share your data with customers and other external users. Public APIs represent unique business value because they can simplify and expand api explanation how you connect with your partners, as well as potentially monetize your data (the Google Maps API is a popular example). APIs present a unique opportunity for businesses to meet their clients’ needs across different platforms. For example, maps API allows map information integration via websites, Android,iOS, etc. Any business can give similar access to their internal databases by using free or paid APIs.

What is a REST API?

A well-designed REST API is similar to a website running in a web browser with built-in HTTP functionality. The 2 architectural approaches that use remote APIs most are service-oriented architecture (SOA) and microservices architecture. SOA, the oldest of the 2 approaches, began as an improvement to monolithic apps.

• APIs are classified both according to their architecture and scope of use.
• Fielding is a computer scientist and a prominent figure in the networked software industry.
• If you want to become an API provider, you’ll likely build an API gateway along with your API.
• API directories are controlled repositories regulated by the directory owner.