Answer: Rightsizing

AWS Compute Optimizer helps identify optimal AWS resources for your workloads to reduce costs and improve performance by analyzing resource utilization metrics. This demonstrates the **rightsizing** concept, which involves selecting the most appropriate resource types and sizes for your workloads to match performance requirements while minimizing costs. **Key points about AWS Compute Optimizer:** - Analyzes historical utilization metrics - Provides recommendations for EC2 instances, Auto Scaling groups, EBS volumes, and Lambda functions - Helps optimize costs by identifying over-provisioned or under-utilized resources - Supports the cloud best practice of rightsizing to achieve cost efficiency The other options are not correct: - **Security validation**: Related to security assessment tools like AWS Security Hub - **Elasticity**: The ability to scale resources up and down based on demand - **Global reach**: The ability to deploy resources across multiple AWS regions worldwide

Author: Ritesh Yadav