Observed Signal · May 15, 2026 · Technical Guide · Source: DEV Community · Impact: 1/5 · Sentiment: Neutral
Clear Guide to AWS Security and Storage
A dev.to technical post (published 2026-05-15) summarizes key AWS security and storage concepts aimed at AWS Cloud Practitioner exam takers and beginners. It explains AWS Config’s change recording and drift detection; distinguishes Shield Standard (free, L3/L4 DDoS protection) from Shield Advanced (paid, covers EC2, ELB, CloudFront, Route 53, Global Accelerator, includes DDoS Response Team and cost protection); and describes WAF’s L7 request-inspection capabilities and where it attaches (CloudFront, ALB, API Gateway, AppSync). The article compares WAF, NACLs, and Security Groups, contrasts EBS, EFS, S3 and Instance Store storage characteristics, highlights the Cost & Usage Report as AWS’s most granular billing feed, and lists five security services (Shield, WAF, GuardDuty, Inspector, Macie) with their primary jobs.
Practical technical guide on AWS services useful for cloud practitioners; educational but not industry-shifting for AdTech/MarTech.
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Key Takeaways & Evidence Grounding
- AWS Config records configuration changes, provides configuration history, and performs drift detection but does not prevent changes.
- Shield Standard is a free, always-on service that protects against common L3/L4 DDoS floods; Shield Advanced is paid, provides real-time visibility, a DDoS Response Team, cost protection, and protects five resource types: EC2, ELB, CloudFront, Route 53, Global Accelerator.
- AWS WAF inspects HTTP/HTTPS request content (URL, headers, body, cookies) and attaches to CloudFront, ALB, API Gateway and AppSync; it does not attach directly to EC2.
- EBS is AZ-scoped block storage for a single EC2 instance; EFS is a managed, multi-AZ network file system mountable by multiple instances; S3 is a global object store accessed via API (PUT/GET).
- Instance Store provides ephemeral, host-attached physical disks with highest I/O performance but data is lost on stop/terminate; Cost & Usage Report delivers hourly, resource- and tag-level billing CSVs to S3.
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