Not merely a server
A VPS is the infrastructure boundary. The architecture is the larger system: identity, business data, tools, agent roles, measurements and recovery controls assembled around a private operating core.
Why ownership matters
When workflows and context live only inside disconnected SaaS products, the business rents its own operational memory. A private core restores control without requiring every specialist tool to be replaced.
The useful test
The architecture is working when a business can trace what an agent knew, why it acted, what outcome followed and how the previous state can be restored.