Create a master data manager web application (Master Data Services)
Applies to: 
SQL Server - Windows only
Azure SQL Managed Instance
The Master Data Manager web application provides an interface for users to work with master data and for administrators to configure and administer MDS.
A web application must always be contained by a website. To create a web application, you must either:
Use the Default website and then create the web application,
Use an existing website and then create the web application, or
Create a new website, which automatically creates a web application.
After you create the web application, you associate it with the Master Data Services database.
Prerequisites
- For information about the requirements for the computer that hosts the web application, see Web Application Requirements (Master Data Services).
To create a Master Data Manager web application in a new website
When you create a new website, the root web application is the Master Data Manager web application. The web application is also added to a new application pool.
Note
If you follow this procedure, you cannot specify a virtual path and alias of the Master Data Manager web application. If you want to specify a virtual path and alias for Master Data Manager, you must create a web application in an existing website that is not already configured as a Master Data Manager web application.
Additionally, Master Data Services Configuration Manager supports creating sites with HTTP bindings only. To add an HTTPS binding, create a new site and application in Master Data Services Configuration Manager and then see Secure a Master Data Manager Web Application for more information.
To create a Master Data Manager web application in a new website
Open Master Data Services Configuration Manager.
In the left pane, click Web Configuration.
On the Web Configuration page, in the Website list, select Create new website.
On the Create Website dialog box, specify information for a new website. For more information about the user interface (UI) options in the dialog box, see Create Website Dialog Box (Master Data Services Configuration Manager).
Click OK.
To create a Master Data Manager web application in an existing website
When you create a web application in an existing website, you can choose the virtual path and alias of the web application. The web application is added to a new application pool.
To create a Master Data Manager web application in an existing website
Open Master Data Services Configuration Manager.
In the left pane, click Web Configuration.
On the Web Configuration page, from the Website list, select the website in which you want to create the Master Data Manager web application.
Click Create Application.
On the Create Web Application dialog box, specify information for a new web application. For more information about the user interface (UI) options in the dialog box, see Create Web Application Dialog Box (Master Data Services Configuration Manager).
Click OK.
Next Steps
Associate the web application with a Master Data Services database. For more information, see Associate a Master Data Services Database and Web Application.
Optionally, configure the website that hosts the Master Data Manager web application to use an HTTPS binding if you want to encrypt content by using Transport Layer Security (TLS), previously known as Secure Sockets Layer (SSL). You must use an Internet Information Services (IIS) tool, such as IIS Manager, to configure the server certificate for the web server, and to configure an HTTPS binding and the TLS settings for the site. For more information, see Secure a Master Data Manager Web Application.