Some helpful links pertaining the CSM to z/OSMF conversion plus information concerning Broadcom's Receive Order (Internet Retrieval), and a zOSMF overview video.
csm2zosmf conversion process taking the CSI's defined in CSM(MSM) and migrating them into z/OSMF (Software Manager).
Broadcom Receive Order: Configure SMP/E Internet Service Retrieval
YouTube Video: Software Update: Modernizing the Maintenance of z/OS Software