Cloud Computing
                     CLOUD COMPUTING
What is cloud computing?
• Cloud computing is the on-demand delivery of IT resources over the Internet with pay-as-you-
go pricing. 
• Instead of buying, owning, and maintaining physical data centers and servers, you can access 
technology services, such as computing power, storage, and databases, on an as-needed basis 
from a cloud provider like Amazon Web Services (AWS).
Source: aws.amazon.com
Who is using cloud computing?
• Cloud computing is the on-demand delivery of IT resources over the Internet with pay-as-you-
go pricing. 
• Instead of buying, owning, and maintaining physical data centers and servers, you can access 
technology services, such as computing power, storage, and databases, on an as-needed basis 
from a cloud provider like Amazon Web Services (AWS).
Source: aws.amazon.com
BENEFITS OF CLOUD COMPUTING
Agility
• The cloud gives you easy access to a broad range of technologies so that you can innovate 
faster and build nearly anything that you can imagine. 
• You can quickly spin up resources as you need them from infrastructure services, such as 
compute, storage, and databases, to Internet of Things, machine learning, data lakes and 
analytics, and much more.
Source: aws.amazon.com
Elasticity
• With cloud computing, you don’t have to over-provision resources up front to handle peak 
levels of business activity in the future. Instead, you provision the amount of resources that 
you actually need.
Source: aws.amazon.com
Cost savings
• The cloud allows you to trade capital expenses (such as data centers and physical servers) for 
variable expenses, and only pay for IT as you consume it.
• Plus, the variable expenses are much lower than what you would pay to do it yourself because 
of the economies of scale. 
Source: aws.amazon.com
Deploy globally in minutes
• With the cloud, you can expand to new geographic regions and deploy globally in minutes. For 
example, AWS has infrastructure all over the world, so you can deploy your application in 
multiple physical locations with just a few clicks.
Source: aws.amazon.com
TYPES OF CLOUD COMPUTING
Infrastructure as a Service (IaaS)
• IaaS contains the basic building blocks for cloud IT. It typically provides access to networking 
features, computers (virtual or on dedicated hardware), and data storage space. IaaS gives you 
the highest level of flexibility and management control over your IT resources. 
Source: aws.amazon.com
Platform as a Service (PaaS)
• PaaS removes the need for you to manage underlying infrastructure (usually hardware and 
operating systems), and allows you to focus on the deployment and management of your 
applications. 
Source: aws.amazon.com
Software as a Service (SaaS)
• SaaS provides you with a complete product that is run and managed by the service provider. In 
most cases, people referring to SaaS are referring to end-user applications (such as web-based 
email). 
Source: aws.amazon.com