Subaccounts → Logical partitions inside a global account. They let you organize environments by project, department, or customer.

Spaces (Cloud Foundry only) → Environments within subaccounts to separate workloads (Dev / Test / Prod).

Think of it like this:
🏢 Global Account (your company’s contract)
→ 📂 Subaccount (HR, Finance, Project A, Project B)
→ 📦 Spaces (Dev, Test, Prod)

Step by Step (Subaccount & Space Creation)

1. Log in to SAP BTP Cockpit.
2. Go to Global Account → Subaccounts → Create Subaccount.
   • Choose Region (important: services are region-specific).
   • Define Subdomain (used in app URLs).
3. Open Subaccount → Cloud Foundry → Enable Cloud Foundry Organization.
4. Inside CF → Create Spaces (Dev, QA, Prod).
5. Assign members & roles per subaccount and space.

Use: Enables resource separation, security, and lifecycle management.