This is available in the Boost plan.
Note: All workspaces created after September 2023 are already switched to this mode.
If your workspace is not already switched, the tracking mode can be switched in the Integrations section, under the Manage User Tracking API section.
If you want to use the backend REST API or one of our backend integrations, you have to switch this setting to Full sync.
Note: if you switch this setting to Full sync and enable functionalities that require it, you will be unable to switch back to Front-end only.