A financial services firm, QuantumLeap Financials, is designing a Zero Trust architecture for its hybrid environment. They have a critical on-premises Active Directory Domain Services (AD DS) infrastructure and a growing footprint in Azure. A key requirement is to protect privileged administrative accounts in AD DS from pass-the-hash and other credential theft attacks originating from compromised workstations. The security architect needs to recommend a solution that isolates administrative tasks from daily user activities like email and web browsing. Which solution best meets this requirement by implementing a tiered access model?