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ASP.NET website development steps using the Master Pages technique
It is very easy to get started with Master Pages, as long as you are highly familiar with working with ASP.NET pages.

Below is the typical development flowchart for an ASP.NET website using Master Pages:

The website designer is responsible for creating the website layout, navigation and graphics. Once this is finalized, it will be coded by the website developers into the “master page.”

The master page is the result of implementing the website designer's ideas. This can be simple or complex, depending on the website's objective. As a suggestion, the simpler the design, the more friendly it will be to your users as well as to the search engines.

In the website development stage, the developers will start to create ASP.NET pages which inherit the design from the master page. So when the website design and development have been completed, it can be deployed on a web server.

The time will come when the website layout will need to be updated. In this case, the developers will simply need to edit the website's master page.

Once done, all ASP.NET pages will automatically inherit the changes made on the master page, thus saving time in the editing/updating process.