TIA · Telecommunications Industry Association
The association behind the TIA-942 data-center standard, whose Rated scale is a separate certification from the Uptime Tiers buyers often assume it matches.
Current numbers
Rated 1–4TIA-942-C resilience scale; full-facility telecom + M&E standard, May 2024 (C) revision
May 2024ANSI/TIA-942-C revision date; renames "Tier" to "Rated-1..4" and adds AI-growth & sustainability accommodations