API (Application Programming Interface)

An Application Programming Interface (API) is a set of protocols and tools that allow different software applications to communicate. APIs enable developers to integrate third-party services, automate workflows, and extend software capabilities without reinventing the wheel. RESTful APIs, GraphQL, and WebSocket APIs are common types used across web and mobile applications.

Key Features:

• Standardized communication – Allows seamless integration between apps.

• Scalability – Supports multiple users and services.

• Security protocols – Uses authentication methods like OAuth and API keys.

• Flexibility – Works across different programming languages and platforms.

For example, APIs are commonly exposed through custom Slack workflows built by Block Kit developers, enabling teams to approve requests, trigger deployments, or fetch data without leaving chat.

Best Use Cases:

• Third-party integrations (e.g., payment gateways, social logins).

• Cloud computing services.

• IoT applications.

• Automating business workflows.