Which of the following are valid ways to strengthen security on AWS? (Choose two.)

Enabling multi-factor authentication (MFA) significantly strengthens security by requiring a second verification factor in addition to a password, making unauthorized access much harder. While Amazon Cognito can manage user identities, MFA itself is the core security enhancement. AWS Trusted Advisor provides security checks that identify potential vulnerabilities and recommend best practices, helping users maintain a secure AWS environment. Granting the broadest permissions to all IAM roles is a major security risk, not a way to strengthen security, as it violates the principle of least privilege. Running application code with AWS Cloud is a general use case for AWS and doesn't inherently strengthen security; security depends on how the application and environment are configured. AWS Artifact provides access to compliance reports and agreements, which supports compliance efforts but doesn't directly strengthen the operational security of an AWS account.