Match the service model to the example.
READ THIS FIRST
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SaaS — finished app (Gmail, Salesforce).
PaaS — you ship code, provider runs runtime + scaling (Heroku, App Engine).
IaaS — raw VMs/disks/networks; you patch the OS (EC2, Azure VMs).
QUIZ
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A team uses Amazon EC2 to run Linux VMs. They install Nginx themselves,
patch the OS, and configure firewall rules. Which service model?
A) SaaS B) PaaS C) IaaS D) FaaS
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