In order to proceed with configuring Redis in your ASP.NET Core web application running as Azure Web App, we first create the Redis Cache in Azure. Redis Cache can be created by going to the marketplace on the Azure portal and finding the Redis Cache template to create.

To create the Redis Cache, we have to input DNS name, Subscription, Resource group, and more, as shown in the next screenshot:

The DNS format of the Redis Cache is {RedisCacheDNSName}.redis.cache.windows.net.