AWS

Organised by domain. Each section covers service selection and architectural trade-offs.

Domain	Content
Compute	EC2, Lambda, ECS, EKS, Elastic Beanstalk
Networking	VPC, Route 53, CloudFront, ELB, API Gateway
Storage	S3, EBS, EFS, Glacier, Storage Gateway
Identity & Access	IAM, Organizations, SSO, Cognito
Security	GuardDuty, Security Hub, WAF, Shield, KMS
Database	RDS, Aurora, DynamoDB, ElastiCache, Redshift
Monitoring & Observability	CloudWatch, CloudTrail, X-Ray, Config
Messaging & Integration	SQS, SNS, EventBridge, Step Functions
Governance	Organizations, SCPs, Control Tower, Budgets
High Availability & DR	Multi-AZ, Multi-Region, AWS Backup, Route 53
Well-Architected Framework	Six pillars, trade-off navigator

See the AWS Exam Track Index for full coverage by certification.