App Engine Studio (AES) provides various predefined application templates. However, creating custom templates can speed up time to production if you have types of applications that you want to create more than once.

You can create a custom template from scratch or use existing content as a starting point. If one of the predefined AES templates is close to what you need, consider extending that template and then customizing it for your needs. Complete your template by adding and customizing data, experiences, logic and automation, and security roles for access.