Ultimate ASP.NET 5 Web API Development Guide - CORS Configuration

The video tutorial introduces Cross-Origin Resource Sharing (CORS) and its significance in enabling APIs to be accessed by clients on different servers. It guides viewers through implementing CORS in a program by modifying the program.cs file, adding a policy named 'allow all' to permit any header, origin, and method. The tutorial emphasizes the importance of configuring CORS for third-party access and demonstrates how to apply the policy in the application pipeline.

Describe the steps to add CORS support in the program.cs file.

What does the 'allow all' policy entail in the context of CORS?