eZ Platform and eZ Studio introduce a whole new user interface and several new features. This section will attempt to give an overview of the migration process.
eZ Platform and eZ Studio represent the 6th generation of eZ Publish, and while the 5th generation had a major focus on backwards code compatibility with the 3rd and 4th generations (legacy), the 6th generation does not.
The 6th generation is aimed at being fully backwards compatible on the following:
The specific changes that will be migrated and are incompatible with legacy are:
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Together these major improvements make it practically impossible to run eZ Platform side by side with eZ Publish legacy, like it was possible in 5.x series. For these reasons we recommend that you use eZ Publish Enterprise 5.4 (which is supported until end of 2021) if you don't have the option to remake your web application yet, or want to do it gradually.
If you are coming directly from legacy (4.x), you need to follow the best practice 5.x Platform migration path and do the following:
See Upgrade documentation on how to perform the actual upgrade: Upgrade (eZ Publish Platform page)
As eZ Platform and eZ Studio introduced completely new user interfaces with greatly improved user experience, the following custom developments needs to be made if you have customization needs:
For a detailed guide through these developments see Upgrading from 5.4.x and 2014.11 to 16.xx 