Microsoft Azure becomes Magic Quadrant leader in Enterprise iPaaS

Last week the new Gartner Magic Quadrant for Enterprise Integration Platform as a Service (EiPaaS) was published, listing Microsoft in the coveted leader space. Having worked with Azure’s iPaaS products for a long time now, I wholeheartedly agree with this decision, and congratulate all the teams within Microsoft who have been working so hard to get to where we are today. The complete report, with all requirements and results can be found in this report.

Source: Gartner (April 2018)

Source: Gartner (April 2018)

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Correlating messages over Logic Apps using Service Bus

When working with Azure Logic Apps, I like to have each Logic App do a single piece of work, as this allows us to mix and match these Logic Apps in various flows. For this demo, we will be using a very simple representation of this, where we have one Logic App which receives the message and send back a response to the original caller, another Logic App which does transformation of the message, and finally a Logic App which calls a backend system. To decouple these Logic Apps we will be using Azure Service Bus topics, providing us with routing capabilities and allowing us to handle downtime more easily.

Architecture

Architecture

Now the challenge we were running into, is that we needed to give the response which we received from the backend, back as a response to the client.

Requested architecture

Requested architecture

Of course, since we have implemented communication between the Logic Apps asynchronously and decoupled by using Service Bus in between, we don’t have a return channel on which we can send the response. In this post, I will show how we can solve this by using Service Bus sessions.

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