API Management Policies integrate external services

A set of new policies is available, which is designed to make it easy to integrate external services into your Azure API Management request/response pipeline. Existing policies allow a wide range of manipulations to HTTP requests and responses. However, the new policies enable interactions with external services using HTTP .Examples of scenarios that can be enabled with these policies include: * Alert error conditions * Validate reference tokens * Aggregate responses from distinct backend services * Enable transparent versioning * Enable edge caching To get started: * Learn how to use the new policies to integrate with external services from your API Management service in [Using external services from the Azure API Management service](https://azure.microsoft.com/documentation/articles/api-management-sample-send-request/). * Check out the policy references for the new policies: * [send-request](https://msdn.microsoft.com/library/azure/dn894085.aspx#SendRequest) * [send-one-way-request](https://msdn.microsoft.com/library/azure/dn894085.aspx#SendOneWayRequest) * [return-response](https://msdn.microsoft.com/library/azure/dn894085.aspx#ReturnResponse) * API Management * Features * [ API Management](https://azure.microsoft.com/en-gb/products/api-management/)