Concepts
Core AWS concepts and architecture patterns: regions, availability zones, the Well-Architected Framework, shared responsibility model, scaling, high availability, and disaster recovery.
AWS Well-Architected Framework: The 6 Pillars Explained
The AWS Well-Architected Framework codifies best practices across 6 pillars: Operational Excellence, Security, Reliability, Performance, Cost, and Sustainability. Learn each.
AWS Step Functions: Serverless Workflow Orchestration
AWS Step Functions orchestrates Lambda, ECS, and other AWS services into durable state machines. Learn Standard vs Express workflows, ASL, error handling, and pricing.
Amazon SQS: Message Queue Service on AWS Explained
Amazon SQS is AWS's managed message queue service. Learn Standard vs FIFO queues, visibility timeout, dead-letter queues, polling, pricing, and when to use SQS vs SNS or Kinesis.
SQS vs SNS: When to Use Each (and the Fan-Out Pattern)
Compare Amazon SQS (pull-based queue) vs Amazon SNS (push-based pub/sub). Learn the SNS→SQS fan-out pattern, when to pick each, and how EventBridge fits in.
Amazon SNS: Pub/Sub Messaging for AWS Explained
Amazon SNS is AWS's managed pub/sub service. Learn topics, subscriptions, fan-out to SQS/Lambda/email/SMS, FIFO topics, message filtering, and when to use SNS vs EventBridge.
Availability Zone (AZ): What It Is and Why It Matters
An AWS Availability Zone is one or more discrete data centers inside a Region with redundant power, networking, and cooling. Learn how AZs enable high availability and how to design for multi-AZ.