Following are the advantages of Azure API Management
Platform Independence enabling multiple clients to call the API through Standard protocols.
Service Evolution enabling adding new functionalities regardless of the clients.
Discoverability enabling documentation on existing services Discoverable by clients.
Backward Compatibility to ensure old version clients are still supported
Security prevents from automated attacks
Caching for faster & cost effective responses
API-First Approach enables Designing application with API consumption in mind.
RESTful enabling usage of HTTP & Common HTTP Verbs GET, PUT, POST, DELETE for CRUD operations, Stateless Request Model enabling easier Scalability.