Introduction In the real world we require to create use cases where we need to invoke more than one endpoint to get the response we need for the API. We may require to get the response from one endpoint and manipulate that response and send it to another. In order to demonstrate this sample let's consider the following flow. We need to design an API which returns details about a country when a country code is entered by a user. One limitation we have is the endpoint which returns the country details expects a country name to be passed. Therefore to accomplish this task we need an intermediate service which gives us the country for the given country code (Service A). After we get the country name then we can pass it to our actual backend service. (Service B) Flow of events. User needs to input a country code We need to pass that entered value to the service A which returns the corresponding name of the country back to us. This is the format it will return. {"country...