PRE-TRAFFICTenant 1KEYsk_live_9e21…USERSana · ben · caraTenant 2KEYsk_live_9e21…USERSdev · eliTenant 3KEYsk_live_9e21…USERSfay · gus · hanathe same keyYour backendno rules on who may do whatCongrats! You’re done coding your business logic.But now there is so much plumbing required to ready your App for multi-tenant production!TRAFFIC READY WITH APIBLAZETenant adminsusers & groupsAgentsover MCPTenant 1KEYsk_live_a41f…USERSana · ben · caraTenant 2KEYsk_live_b7c2…USERSdev · eliTenant 3KEYsk_live_c93e…USERSfay · gus · hanaAPIblazeAPI + MCP gatewaytheirs — allowedone secret, held here onlysomeone else’s record — deniedYour backendunchangedeach call names its end user — X-End-User-Id, or the sub from their OAuth loginTenants self-serve their keysThey run their own users and groupsPolicies check every requestThrottling and quotas cap the spend