Answer: Managing AWS Identity and Access Management (IAM)

According to the AWS Shared Responsibility Model: - **AWS is responsible for security OF the cloud** - This includes securing the infrastructure, physical security of data centers, edge locations, and hardware security. - **Customer is responsible for security IN the cloud** - This includes managing IAM users and permissions, securing application-level access, and configuring security groups. **Option A (Correct)**: Managing IAM is the customer's responsibility as it involves controlling user access to AWS resources. **Option B**: Securing edge locations is AWS's responsibility as part of their infrastructure security. **Option C**: Monitoring physical device security is AWS's responsibility in their data centers. **Option D**: Implementing SOC standards is primarily AWS's responsibility for their compliance certifications, though customers must implement proper controls within their applications.

Author: Ritesh Yadav