In this chapter, we've given an overview of system integration in the cloud. We defined various components of the cloud such as Platform as Service (PaaS), Infrastructure as service (IaaS), and Software as Service (SaaS). We described the evolution of integration and microservices architecture design principles and reasons why technology is moving toward better fine-grained design patterns using the microservices model.

In the next chapter, you will start the journey to learn the basics of Azure components such as resource group and app plan.