Usability One of the main benefits of having multiple domain names is that it gives you multiple points of entry: this can be useful if, for example, you want different domains leading to differently themed sites for different marketing campaigns or user experiences.
Cost Saving Another benefit that you can take advantage of is the ability to have more than one domain running on a single environment. For example, you can have two different applications with two different domains running on a single Tomcat instance
n order to use a domain name for your application, you need to register it or have administrative access to it.
Log into the PaaS account.
While in the platform dashboard, click the Create environment button:
In a minute your environment with Tomcat will be successfully created.
For example:
...
Note: If you want to redeploy an application to the Tomcat instance with already configured server.xml, you need to comment < Host > block before redeploying and uncomment it afterwards.