S3 to Lambda Through EventBridge: Cost, Audit, and Routing Trade-offs
Choose direct S3 events or CloudTrail data events for EventBridge without paying for an audit path your Lambda trigger does not require.
Learn how production systems are designed, operated, and debugged.
Follow structured lessons that explain the decision, let you practise safely, show what failure looks like, and help you prove what you learned.
Every reviewed lesson includes
Clear outcomes
Evidence status
Failure signals
Cost & cleanup
Knowledge check
Read the editorial and learning standard, including verification, corrections, lab safety, and AI-assistance rules.
The problem
Deployment is not the same as learning.
A command can work while the learner still cannot explain the architecture.
A diagram can look correct while hiding retries, cost, security boundaries, and operational ownership.
A tutorial can finish at deployment without showing evidence, failure, or cleanup.
InfraTales treats every article as a learning unit, not a page-view unit.
What InfraTales does differently
Answer, reason, practise, prove, continue.
Each lesson starts with a direct answer and observable outcomes. It then explains the architecture and trade-offs, shows failure signals, provides safe practice, checks the learner's judgement, and points to one explicit next lesson. Evidence status is visible instead of implied.
How to use InfraTales
Read these first
The articles most likely to earn a second visit.
AWS CodeDeploy on EC2 Auto Scaling: ALB Health, Rollback, and Safe Releases
Wire CodeDeploy, an Auto Scaling group, and an ALB so new instances receive the right revision and failed releases stop and roll back.
AWS Web App on Fargate, Aurora, and CloudFront: Production Boundaries That Matter
Design the traffic, network, database, secret, scaling, and cost boundaries for a Fargate web application instead of stopping at deployment.
Launch learning path
Event-Driven AWS: from service choice to failure recovery.
Start with the S3, Lambda, and SQS architecture decision. Continue through retries, idempotency, dead-letter queues, monitoring, cost, and a final decision exercise.
Consulting
Need an architecture review, cost teardown, or AI infrastructure assessment?
InfraTales also offers focused reviews for teams that need an explicit recommendation, documented assumptions, realistic trade-offs, and a prioritised action list.
Core publication areas
Choose the operating surface you are working on.
Start with the six most useful technical entry points, then move to the full topic directory if you need the wider taxonomy.
Core systems
AWS Architecture
Architecture decisions, service boundaries, and production patterns for building on AWS.
Delivery systemsDevOps and Platform Engineering
Developer platforms, deployment workflows, infrastructure as code, and the mechanics that keep teams shipping.
ResilienceSecurity and Reliability
IAM, failure isolation, recovery planning, defensive controls, and reliability work that survives the first incident.
EfficiencyCost Optimization
FinOps, savings trade-offs, architecture-driven spend reduction, and the places optimization breaks production.