In this section, I'll be discussing the scalability options for Azure App Service. Using these scalability solutions will help you to have a highly available application.

There are two types of supported scalability:

• Scaleup: Here, you increase the size of the resources on which the web app operates. For example, memory, CPU, and disk space.
• Scaleout: Here, you increase the number of instances on which the apps operate. For example, if you are facing a high load over the instance on which the web app operates, another one will be created to load balance with it.