Most of what was covered in the previous chapter could apply to any serverless product; even runtimes that seem unique are fairly similar. You can easily find analogues for most of the previous chapter in AWS or Google Cloud. In this chapter, you will learn about Azure-specific features. You'll integrate your function with other Azure services to create a serverless RESTful API. Azure Application Insights will also be integrated into your solution, providing your support team with unparalleled data about what your application is doing. Finally, your serverless functions will be secured using API keys, to prevent unauthorized use.

By the end of this chapter, you will be able to:

• Integrate an Azure Function with Cosmos DB
• Combine a complete logging and monitoring solution with Azure Application Insights
• Secure your Azure Functions using API keys
• Integrate with an Azure App Service