Although the original version of SDL Digital Experience Accelerator did not include official support for an official API, this topic is included to help users upgrading from that release to the current one.
API changes Some changes made to the public APIs have backward compatibility implications.
No more global configuration Global configuration no longer exists as a concept: all configuration is published in all Publications, whereas certain settings, such as Template IDs and Schema IDs, used to be published in the master Web Publication only.
Change to DD4T serialization and deserialization format If you extended the publishing process and are expecting DD4T in XML format, your extension will break: the DD4T is now serialized and deserialized using the JSON format.
Change to Page model creation If you extended the BaseController class, it might break due to a change in the way in which SDL Digital Experience Accelerator creates Page models.