Expands §1.2 into a proper three-tier section: positioning per tier, a capability × tier table (with source + whether the doc is explicit), the billing differences, and the documented contradiction (authentication lists "managed policy settings" as Enterprise-only while the server-managed-settings feature page says Teams+ can use it). Also flags that most controls hinge on provider (Anthropic-direct + admin write access) rather than subscription tier. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>