Thank you for the response! I found this:

The PlayStation 5 does not support CDs and will not play 3D Blu-ray content. The choice of Ultra-HD Blu-ray as the disc medium means PlayStation 5 game discs can hold up to 100 GB of data, in contrast to PlayStation 4 games which usually came on dual-layer standard Blu-ray discs capable of holding up to 50 GB.>