There are several types of APIs, each serving different purposes:
REST APIs: Representational State Transfer (REST) APIs use standard HTTP methods and are widely used due to their simplicity and scalability. SOAP APIs: Simple Object Access Protocol (SOAP) APIs use XML-based messaging and are known for their robustness and security. GraphQL APIs: GraphQL APIs allow clients to request specific data, reducing the amount of data transferred over the network. Internal APIs: These are used within an organization to integrate internal systems and streamline operations. External APIs: These are exposed to third-party developers to enable integration with the company's services and products.