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AWS Shared Responsibility Model

📅 Apr 15, 2026

AWS CLOUD PRACTITIONER / SAA-C03

AWS Shared Responsibility Model

☁ AWS को जिम्मेवारी

▸ Global infrastructure (Regions, AZs)

▸ Data centers — physical security

▸ Hardware र networking

▸ Host OS

▸ Hypervisor / virtualization layer

▸ Managed services patching

👤 Customer को जिम्मेवारी (EC2)

▸ Guest OS patching (Linux/Windows)

▸ Security updates (yum, apt, Windows)

▸ Installed applications & utilities

▸ EC2 Security Group configuration

▸ IAM usage inside workload

▸ Data encryption

🧠 Memory Trick — OS को माथि Customer, तल AWS

Layer Responsibility Note
Application ✔ Customer  
⭐ Guest OS ✔ Customer ← EXAM QUESTION
Security Group ✔ Customer  

─────── OS को तल = AWS ───────

Hypervisor ✘ AWS  
Host OS ✘ AWS  
Physical Hardware ✘ AWS  
AZ / Region ✘ AWS  

❓ Exam Questions — 100% आउँछ

Question Answer
Who patches the guest OS on an EC2 instance? ✔ Customer
Who patches the host OS / hypervisor? ✘ AWS
Who manages Availability Zone infrastructure? ✘ AWS
Who configures EC2 Security Groups? ✔ Customer

"Customers that deploy an Amazon EC2 instance are responsible for the management of the guest operating system (including updates and security patches)."


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