To add an AWS account in BDRShield, you need to provide your AWS credentials (Access Key ID and Secret Access Key) to securely connect to your AWS environment. Once the credentials are verified, BDRShield will automatically discover your AWS EC2 instances. You can then configure backups for these instances directly from the BDRShield Backup Server, scheduling full or incremental backups as needed. The process ensures your AWS workloads are protected and recoverable, with options for cross-region backup and encryption for enhanced security.