Q: What is the shared responsibility model in AWS?
AWS and you share responsibility for security:
#AWS #Cost & Architecture #L2 #Cloud #Infrastructure #EC2
🎙️ 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
Initial Diagnostics & Root Cause Analysis
AWS and you share responsibility for security:
- Security OF the cloud — hardware, facilities, networking, hypervisor, managed service infrastructure.
- Patching the underlying EC2 hypervisor.
- Physical security of data centers.
- Security IN the cloud — your OS, applications, data, IAM, Security Groups, encryption.
- Patching your EC2 OS (you own the OS).
2️⃣
Remediation & Permanent Safeguards
AWS is responsible for: You are responsible for: Example: If your EC2 OS has an unpatched vulnerability, that's your responsibility, not AWS's. If the hypervisor has a vulnerability, that's AWS's responsibility.
- Encrypting data at rest and in transit.
- Proper IAM configuration.
- Application-level security.
💡 The Senior SRE Gold Nugget (Key Architectural Takeaway)
"Pro-Tip: Security OF the cloud — hardware, facilities, networking, hypervisor, managed service infrastructure.."
⚡ 60-Second Elevator Pitch Talking Points
- Security OF the cloud — hardware, facilities, networking, hypervisor, managed service infrastruct...
- Patching the underlying EC2 hypervisor.
- Physical security of data centers.
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