In this chapter, we started with workflow definition language for Logic Apps including expressions, operators, and functions. The workflow definition contains the actual logic that gets executed within the Logic App engine. The workflow definition is a JSON file that contains a one or more triggers that initiate the Logic App and associated single or multiple actions within the Logic App. We also looked into the types of header content supported in Logic Apps and how can we loop through the array items in the message using flow control - foreach, until, and Terminate. We also discussed how to implement exception handling using scope in Logic Apps.

Finally, we covered the hybrid integration scenario using On-premise data gateway, where Logic App connects securely to on-premise SQL server to insert records in database tables. We also created a nested workflow where once Logic App calls another to achieve a composite service-type workflow.

In the next chapter, we will introduce SaaS connectivity...