Cloud Computing Models

Question 1

Infrastructure as a Service (IaaS)

Answer 1

Provider (AWS) hosts virtualized computing resources over the internet

• customers can rent virtual machines (VMs), storage and networking infrastructure on-demand allowing them to scale resources up or down as needed without the need to invest in physical hardware
• Compute: EC2 (Virtual Machines)
• Networking: VPC (Private Cloud Network)
• Storage: EBS (Virtual Hard Drives)

Question 2

Platform as a Service (PaaS)

Answer 2

Provides a platform allowing customers to develop, run, and manage applications without dealing with the underlying infrastructure

• Lambda
• Elastic Beanstalk
• RDS

Question 3

Software as a Service (SaaS)

Answer 3

Software applications are hosted and provided to customers over the internet on a subscription basis

• AWS Trusted Advisor
• AWS Shield
• Amazon Chime: communications service the provides online meetings, video conferencing, chat and screen sharing capabilities