Increasingly Application Programming Interfaces (APIs) are being referred to as the engines of growth and are fundamentally changing the way organizations do business. In this course, Microsoft Azure API Management Essentials, you'll learn about using Azure API Management service to ensure that your current and future APIs can reach the fullest potential. First, you'll learn why you should use API Management, and how to manage your API with Azure API Management. Next, you'll learn how to protect your API with rate limits and how to add caching to improve API performance. Then, you'll learn about policies in API Management and C# based Policy Expressions. Finally, you'll learn about security in API Management. By the end of this course, you'll have a solid understanding of Azure API Management, its key capabilities, and how to host and secure your API (internal and external).