A company is migrating a commercial off-the-shelf application to AWS. The software licensing model uses sockets and cores, with predictable capacity and uptime. The company wants to use its existing licenses purchased earlier this year. Which Amazon EC2 pricing option is MOST cost-effective?

Dedicated Reserved Hosts are the most cost-effective option because they provide physical servers dedicated to your use, which is essential for licensing models tied to sockets and cores. This allows you to use your existing per-socket or per-core software licenses. "Reserved" ensures a lower cost compared to on-demand options. Dedicated On-Demand Hosts would also provide dedicated physical servers but at a higher, on-demand price, making them less cost-effective. Dedicated Reserved Instances and Dedicated On-Demand Instances provide dedicated instance capacity, not dedicated physical hosts. While instances run on dedicated hardware, you don't have visibility into or control over the underlying physical server's socket and core count, which is crucial for the specified licensing model.