Is Zero Trust a product I can buy?

No. Zero Trust is not a product you buy off the shelf, but a security model built around three principles: verify explicitly, use least-privilege access, and assume breach. In Microsoft 365 environments, that model is implemented through controls such as Conditional Access, Multifactor Authentication, device compliance, Privileged Identity Management, data protection, and monitoring rather than through a single SKU or platform switch. That is why buying licences alone does not “complete” Zero Trust; organizations still need policy design, rollout, governance, and ongoing operational discipline.