Cloud Computing Fundamentals –
Notes + Diagram Summary
1. Introduction to Cloud Computing:
Cloud computing is the method of using online servers,
storage, and software instead of local devices or company-
owned data centers. Instead of saving everything on your
laptop or USB drive, you can store data on the “cloud,”
meaning it’s kept safely online and can be accessed from
anywhere.
In simple words, cloud computing means renting computing
power or space over the Internet. It helps organizations
reduce hardware costs, increase flexibility, and scale quickly
when demand changes.
Example: When you watch Netflix or use Google Drive, you are
using cloud-based services. The data, videos, and files are not
stored on your personal device but on remote servers owned
by large providers.
2. Main Characteristics of Cloud Computing:
Cloud computing is built around five key characteristics:
1. On-demand access: You can start using resources instantly
no need to wait for physical installation.
2. Broad network access: You can use the service from any
device with an Internet connection.
, 3. Resource pooling: The provider uses shared servers to
serve many users efficiently.
4. Rapid elasticity: Services can automatically scale up or
down based on demand.
5. Measured service: You pay only for what you use — just like
an electricity bill.
Note: These features make cloud systems flexible, cost-
efficient, and user-friendly for both small startups and large
enterprises.
3. Types of Cloud Deployment Models:
Cloud deployment refers to how the cloud environment is set
up and who can access it. There are three main models:
a) Public Cloud.
Provided by third-party companies like Amazon Web
Services (AWS) or Microsoft Azure.
Shared by many users, but data is kept separate.
Best for general business operations and testing
environments.
b) Private Cloud.
Used by a single organization for complete control and
higher security.
Runs either on-site or via a dedicated external provider.
Common in banks, hospitals, and government offices.
c) Hybrid Cloud.
Combines public and private setups.
Notes + Diagram Summary
1. Introduction to Cloud Computing:
Cloud computing is the method of using online servers,
storage, and software instead of local devices or company-
owned data centers. Instead of saving everything on your
laptop or USB drive, you can store data on the “cloud,”
meaning it’s kept safely online and can be accessed from
anywhere.
In simple words, cloud computing means renting computing
power or space over the Internet. It helps organizations
reduce hardware costs, increase flexibility, and scale quickly
when demand changes.
Example: When you watch Netflix or use Google Drive, you are
using cloud-based services. The data, videos, and files are not
stored on your personal device but on remote servers owned
by large providers.
2. Main Characteristics of Cloud Computing:
Cloud computing is built around five key characteristics:
1. On-demand access: You can start using resources instantly
no need to wait for physical installation.
2. Broad network access: You can use the service from any
device with an Internet connection.
, 3. Resource pooling: The provider uses shared servers to
serve many users efficiently.
4. Rapid elasticity: Services can automatically scale up or
down based on demand.
5. Measured service: You pay only for what you use — just like
an electricity bill.
Note: These features make cloud systems flexible, cost-
efficient, and user-friendly for both small startups and large
enterprises.
3. Types of Cloud Deployment Models:
Cloud deployment refers to how the cloud environment is set
up and who can access it. There are three main models:
a) Public Cloud.
Provided by third-party companies like Amazon Web
Services (AWS) or Microsoft Azure.
Shared by many users, but data is kept separate.
Best for general business operations and testing
environments.
b) Private Cloud.
Used by a single organization for complete control and
higher security.
Runs either on-site or via a dedicated external provider.
Common in banks, hospitals, and government offices.
c) Hybrid Cloud.
Combines public and private setups.
