Practical explanation:
APIs make it possible for tools and platforms to work together. For example, a website can use an API to send form data to a CRM, connect analytics tools, or pull information from external services without manual copying.
How it’s used in practice:
APIs are used to connect marketing tools, analytics platforms, payment systems, and content management systems. They enable automated data flow, reduce manual work, and ensure that information stays consistent across systems.

When to use it:
An API is used whenever two systems need to share data or trigger actions automatically. This is common in website integrations, marketing automation, reporting setups, and custom digital solutions.
Related terms:
Integration, Automation, CRM, Data