They also used to be able to be set up standalone without controller (have one AP lite as well) but they removed that from their "apps" a while back (already set up APs keep working in standalone mode). This has caused me to make new AP deployments around the house using TP-Link Omada APs w/ OpenWRT firmware instead. Ubiquity is no longer worth the premium if they keep messing with the software side of things (although their hardware keeps working well).