Interesting, for my part I would never build a data center (or underpin critical infrastructure) with Ubiquiti but I have a lot of it at blind remote sites and it works well enough - WAN failover, and they've built out a fair bit of downstream failover as well - shadow gateways, RPS, etc. Has replaced a lot of Meraki subscriptions.

Ooh, I'd love to hear how you've made that work because ZTD with Ubiquiti - at least in their Bluetooth app deployment era - has been a crapshoot for me.

As for data centers, I should be clear on sizing: we're talking the same sort of footprints you'd see Meraki leveraged for (<10 racks, mostly traditional storage/hypervisors/big iron stuff), not HPCs and Hyperscalers and the like. Y'know, standard VLAN-based isolation, traditional load balancers instead of network overlays, maybe the odd eBGP for public cloud connectivity with the new Ubiquiti Network update. Areas where I don't need QSFP+ to endpoints and where budget forces me to choose between hardware and headcount (an area Ubiquiti and Meraki excel in). Even then, I'd really only lean into Ubiquiti over Meraki if I'm trying to conserve capital and I'm unsure of scaling: Ubiquiti is cheaper to replace if I need to scale up than Meraki, but Meraki's support is generally far superior than Ubiquiti since it's Cisco folk.

Could I build a data center on Ubiquiti? Totally. Would I? That's highly dependent on the specific context.