Which feature allows for resource optimization in a vSphere environment?

Resource Pools are designed specifically for resource optimization within a vSphere environment. By using Resource Pools, administrators can allocate and manage shares, limits, and reservations of CPU and memory resources for virtual machines and their workloads. This granular control allows for improved efficiency and ensures that resources are utilized according to the business requirements.

The ability to prioritize resources based on application needs and user requirements is a crucial aspect of optimizing performance and maintaining service levels. Resource Pools facilitate efficient resource distribution, making it easier to respond to varying workloads and demands across the environment. As workloads evolve, the dynamic nature of Resource Pools contributes to better overall resource management and operational efficiency.

Other options like VMware Tags can assist with categorization and organization of virtual machines or resources but do not directly optimize resource allocation. Thin Provisioning is primarily focused on storage efficiency by allowing virtual disks to consume only the space they need, rather than pre-allocating all the space upfront. VMware Site Recovery Manager (SRM) is intended for disaster recovery and availability management, not for optimizing resource utilization.