Cloud Computing Concepts

Question 1

What is cloud computing?

Answer 1

Cloud computing is the on-demand delivery of compute power, database storage, applications and other IT resources through a cloud services platform via the Internet with pay-as-you-go pricing.

Cloud computing provides a simple way to access servers, storage, databases and a broad set of application services over the Internet.

Question 2

What are some advantages of the cloud?

Answer 2

• Trade capital expense for variable expense (pay only for how much you consume)
• Benefit from massive economies of scale
• Stop guessing about capacity
• Increase speed and agility
• Stop spending money running and maintaining data centers
• Go global in minutes

Question 3

What are the three types of cloud computing models?

Answer 3

• Infrastructure as a service (IaaS)
• Platform as a service (PaaS)
• Software as a service (SaaS)

Question 4

What are the three types of cloud deployment?

Answer 4

• Public Cloud or simple “Cloud” – e.g. AWS, Azure, GCP
• Hybrid Cloud – mixture of public and private clouds
• Private Cloud (on-premise) – managed in your own data centre, e.g. Hyper-V, OpenStack, VMware