In the era of abstract service communication via API, implementing error handling using best practices is essential. In this course, you'll learn some of the best methods for handling and identifying REST API error response messages. You'll also explore the sub-elements of SOAP fault blocks. Next, you'll learn about standards for HTTP response codes, REST API JSON response standards, and standard API error messages. You'll explore how Facebook uses the Graph API web service and methods for dealing with debugging and error handling. Lastly, you'll learn how to use .NET Core to create a REST API web service, and handle error handling and custom errors.