AEM Sites and AEM Forms are sold via separate licenses. AEM Sites (i.e.
Quickstart only) contains "Forms" components as part of AEM Sites
functionality to design simplistic data capture functionality. Refer:
Foundation Components . Customers with AEM Sites license can use "Forms"
components for such use-cases.Adaptive Forms feature is part of AEM
Forms. A preview level feature is embedded inside Quickstart for easy
discoverability but it does not unlock the full potential of mobile