AZ-305 Cheat Sheet (High-Yield Review)
Last-minute review of key differences, traps, and high-yield topics.
Quick answers
- S3/EBS/EFS: know when each fits.
- ALB vs NLB: L7 features vs L4 performance.
- Security Group vs NACL: stateful vs stateless.
- Multi-AZ vs Read Replica: HA vs read scaling.
A good cheat sheet is a list of decisions you can repeat under pressure: what to pick and why.
For AZ-305, most points come from choosing the right governance control, network topology, storage option, and DR pattern.
Use this page as a fast refresher, then drill questions in the app to make the rules stick.
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High-yield review list
- S3: durability, storage classes, lifecycle, replication.
- EC2: ASG + ALB patterns, placement, EBS vs instance store.
- VPC: routing, security groups vs NACLs, endpoints.
- Databases: RDS vs DynamoDB, Multi-AZ basics, read replicas.
- CloudFront: caching + origin patterns, signed URLs/cookies basics.
Topics & Skills Covered
- Policy vs RBAC
- Connectivity patterns
- Storage selection rules
- DR and resiliency basics
- Monitoring signals
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Frequently Asked Questions
What’s the fastest way to use a cheat sheet?
Read it once, then do timed questions immediately. Every mistake becomes a new rule you add to your notes.
Should I memorize SKU details?
Only the ones that affect architecture decisions. Focus on constraints, tradeoffs, and patterns.
How often should I review it?
Daily for 5–10 minutes during the final week before the exam.
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