High-cardinality partition keys for balanced partition access
Cloud storage options (for example, file, object, databases)
Database consistency models (for example, strongly consistent, eventually consistent)
Differences between query and scan operations
Amazon DynamoDB keys and indexing
Caching strategies (for example, write-through, read-through, lazy loading, TTL)
Amazon S3 tiers and lifecycle management
Differences between ephemeral and persistent data storage patterns
Identity federation (for example, Security Assertion Markup Language [SAML], OpenID Connect [OIDC], Amazon Cognito)
Bearer tokens (for example, JSON Web Token [JWT], OAuth, AWS Security Token Service [AWS STS])
The comparison of user pools and identity pools in Amazon Cognito
Resource-based policies, service policies, and principal policies
Role-based access control (RBAC)
Application authorization that uses ACLs
The principle of least privilege
Differences between AWS managed policies and customer-managed policies