Originally the Agama Linux OS installer was leveraging the Cockpit project, but recently they decided to abandon it. Due in part to Cockpit adopting a new Python-based bridge and various complexities its use has caused, the SUSE YaST team decided to stop using it.
The latest Agama installer code has switched from D-Bus to HTTP as the main communication protocol, the start-up time and speed has improved with these architectural changes, and they have also been making more progress on their advanced setup storage capabilities:
They have also been rewriting the network stack, enhancing the UI, better supporting TPM-based full disk encryption, and making other enhancements.
Those wanting to learn more about this openSUSE/SUSE Agama installer work can see the YaST blog for more information.