In this article you will learn how to manage Scaling Up and Scaling Out in Azure Web Sites,
Azure App Service support increases performance and throughput for your web apps on Microsoft Azure. Three types of plans are available in Azure Web Apps. They are Free mode to Shared, Basic, Standard, or Premium mode.
You can see my previous articles for creating Azure Websites here,
Prerequisites
Let's get started with the following steps:
Firstly, Sign in to the online Microsoft Azure Portal. Scaling Up in Azure Web Sites
In the web app's blade in the Portal, click All settings, then click Scale Up.
Scaling Out in Azure Web Sites
In the web app's blade in the Portal, click All settings, then click Scale Out.
Microsoft Azure Step by Step Guide