Microsoft Active Directory (2000)
Microsoft shipped Active Directory with Windows 2000. It became the registry that decided which users and machines could access what inside a company. Whoever was listed in it got in; whoever wasn't stayed out.
Enterprises standardized identity and access around Microsoft's directory.
Owning the identity registry gave Microsoft durable control over corporate IT for decades.
SAP is making the same play for agents. The company that runs the registry of who can act decides what happens inside the systems.
