Microsoft Azure is a cloud computing platform and cloud service created by Microsoft for building, testing, deploying, and managing applications and services through Microsoft-managed data centers. App Service is the Platform-as-a-Service offering of Azure that allows creating web or mobile applications for any platform and integrating applications with Software as a Service. App Service supports mobile apps, RESTful APIs, websites, web applications, and automated business processes through logic apps without coding. The online training teaches how to host web applications in Azure, manage virtual machines, work with Azure services, migrate data to Azure SQL databases, and build high performance apps using ASP.NET. The training is suited for developers proficient in building application solutions.