Types of APIs ?
In web applications, there are several types of APIs commonly used, each serving different purposes:

Open APIs (Public APIs):
These are available to any developer and are often used to allow external users to access data and services. They are typically designed for ease of use and broad accessibility.
Internal APIs (Private APIs):
These are used within an organization to connect systems and data internally. They are not exposed to external users and are designed to improve internal processes and data sharing.
Partner APIs:
These are shared with specific business partners. They provide access to data and services but are not publicly available. They are used to facilitate business-to-business interactions.
Composite APIs:
These combine multiple API calls into a single call. They are useful for complex operations that require data from multiple sources1