What is API integration?

An API (Application Programming Interface) is a set of rules that allows different software systems to communicate with each other.

API integration connects your tools so they can share data and trigger actions automatically. For example, when a customer fills out your website form, an API integration can automatically add them to your CRM, send a welcome email, create a task for your sales team, and log the interaction - all without manual work. APIs are the backbone of modern business automation. Most popular business tools (Stripe, Google, Salesforce, Slack, etc.) offer APIs. Custom software uses these APIs to create seamless, automated workflows between your systems.