The new Premium tier of Azure API Management simplifies high availability and massive scale (each unit includes one billion API calls per month). Geo-distribution provides a turnkey way for you to host an API Management instance in multiple Azure datacenters with automatically synchronized configuration around the world. Added virtual private network (VPN) connectivity means you can connect the API Management proxy to your Azure Virtual Network (including ExpressRoute) for maximum security and performance when tackling hybrid scenarios. Integration with Azure Active Directory provides better support for internal and business-to-business API programs, allowing developers to sign in to the Azure management portal by using their corporate credentials.
For more information, please visit the API Management
page. For a comprehensive look at pricing, please visit the API Management Pricing