Answer: Reserved Instances

For applications with a predictable and continuous usage pattern over a long period, such as 1 year, Reserved Instances offer the most cost-effective pricing. They provide a significant discount compared to On-Demand pricing in exchange for a commitment to use a specific instance type, platform, and region for a term of 1 or 3 years. Spot Instances are subject to availability and can be interrupted, making them less suitable for continuous usage. On-Demand Instances are more expensive and are best for short-term or unpredictable workloads. Dedicated Hosts are ideal for licensing optimization or specific compliance requirements but are not the most cost-effective for continuous usage without these considerations.

Author: LeetQuiz Editorial Team