Claude Code cloud sessions can now run on your own runners.

Self-hosted environments went public beta August 6 for Team/Enterprise, off by default: create a named environment in admin settings, deploy long-lived runners inside your network, and sessions started from web, mobile, desktop, claude --cloud or scheduled routines execute on your hosts. All traffic is outbound HTTPS to api.anthropic.com. Repo checkouts, build artifacts and secrets stay local; prompts, responses and tool results still leave for inference. The sizing detail that decides your bill: a runner locks to the first user who claims it, so minimum fleet size equals peak concurrent users. --drain-grace-sec defaults to 0, and --retire-at is required for signal-less kills like spot reclamation. Excluded: ZDR orgs, and no Bedrock, Google Agent Platform, Microsoft Foundry, or gateway routing.