AWS Certification Practice Exam 2025 – The All-in-One Resource to Master Your Certification!

Dedicated Hosts is a specific pricing model that allows you to use physical server resources dedicated to your use, unlike the other options which are more flexible compute options.

On-Demand Instances enable you to pay for compute capacity by the hour or second, with no long-term commitments, allowing you to scale your resources according to demand. Reserved Instances provide significant savings on instances that you commit to using for a one- or three-year term, making them suitable for predictable workloads. Spot Instances allow you to bid on spare Amazon EC2 capacity, offering additional flexibility and potential cost savings during times of low demand.

Dedicated Hosts, while valid for deployment of EC2 instances, is not categorized as a purchasing option but rather a method of deployment that allows you to utilize a physical server solely for your use. This makes it distinct from the standard purchasing models that work based on time and usage.