A company is decommissioning its physical servers and replacing them with an architecture that will reduce the number of individual operating systems. Which of the following strategies should the company use to achieve this security requirement?

Containerization is the correct strategy because it allows applications and their dependencies to be bundled into isolated units (containers) that share the host operating system kernel. This significantly reduces the number of individual operating systems needed compared to virtualization, where each virtual machine has its own full operating system. Microservices is an architectural style for developing applications as a suite of small, independent services, but it doesn't directly reduce the number of operating systems. Virtualization consolidates multiple virtual machines onto a single physical server, but each VM still runs its own full OS. Infrastructure as code automates infrastructure provisioning and management but doesn't inherently reduce the number of operating systems.