Q: What is Amazon EventBridge and how does it differ from SNS?
EventBridge = event bus that routes events from AWS services (EC2, S3, CodePipeline) and custom apps to Lambda, SQS, SNS, Step Functions....
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🎙️ Candidate Opening & Architectural Context
""AWS reliability requires differentiating between AWS control plane limits and host-level resource exhaustion. When addressing this question, I walk the interviewer through our production incident runbook: isolating the blast radius, checking diagnostic logs and metrics, and applying a safe fix.""
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🛠️ Production Runbook & Step-by-Step Resolution
1️⃣
Production Solution & Architecture
EventBridge = event bus that routes events from AWS services (EC2, S3, CodePipeline) and custom apps to Lambda, SQS, SNS, Step Functions. Content-based routing (route based on event fields). SNS = simple pub/sub, filter by attributes. EventBridge is richer — 100+ AWS service integrations, schema registry, event replay.
💡 The Senior SRE Gold Nugget (Key Architectural Takeaway)
"Pro-Tip: EventBridge = event bus that routes events from AWS services (EC2, S3, CodePipeline) and custom apps to Lambda, SQS, SNS, Step Fun."
⚡ 60-Second Elevator Pitch Talking Points
- Immediate Triage: EventBridge = event bus that routes events from AWS services (EC2, S3, CodePipeline) and custom
- Run targeted verification commands before modifying configuration.
- Automate permanent guardrails (CI check, alerts, IaC policy) to prevent recurrence.
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