applikationsAPMovervågning

Applikations-APIs, commonly referred to as APIs in English, are interfaces that enable software components to communicate. An API defines the available functions, the required parameters, the data formats, and the conventions for requests and responses. By using APIs, a program can request services from another program, library, or platform while keeping its own internal logic encapsulated.

APIs can be of several types: web APIs for remote services, library or framework APIs for local code, operating-system APIs for system calls, and hardware APIs for devices. They enable modular design by allowing components to interact without sharing implementation details.

Common communication styles include REST, GraphQL, and SOAP. Security and access control are central: API keys, OAuth, and rate limits protect resources. Versioning helps maintain backward compatibility as APIs evolve, while thorough documentation supports developer use and reduces integration errors.

APIs enable app ecosystems by composing services, automating tasks, and enabling integrations across platforms. Notable examples include Google Maps API, Twitter API, Windows API, POSIX, and the Android API. Effective governance, clear documentation, stable interfaces, and consistent authentication practices contribute to durable and scalable API programs.