Introduction to Cloud Computing
Cloud computing is a modern technology that
allows users to store, manage, and process data on remote servers instead of
local computers. It enables access to data and applications over the internet
anytime and anywhere. For example, when you use Google Drive or Dropbox, you
are using cloud computing to store and access your files online.
Advantages of Cloud Computing
1. Cost Efficient – Reduces the need for
expensive hardware and software.
2. Accessibility – Access files and data from anywhere with an internet
connection.
3. Scalability – Easily increase or decrease storage and computing power as
required.
4. Backup & Recovery – Ensures automatic data backup and recovery during
failures.
5. Collaboration – Allows multiple users to work together on the same project
in real time.
Characteristics of Cloud Computing
• On-Demand Service – Users can use
services as and when required.
• Broad Network Access – Services are available over the internet using
multiple devices.
• Resource Pooling – Shared resources are provided to multiple users
efficiently.
• Rapid Elasticity – Resources can expand or reduce quickly based on demand.
• Measured Service – Users are charged only for the resources they actually
use.
Types of Cloud
1. Public Cloud – Services offered to
everyone through the internet (e.g., Google Cloud).
2. Private Cloud – Used by a single organization for enhanced security.
3. Hybrid Cloud – A mix of public and private clouds for flexibility and
efficiency.
4. Community Cloud – Shared among organizations with similar goals or
requirements.
Services of Cloud Computing
1. IaaS (Infrastructure as a Service) –
Provides virtual hardware and servers.
2. PaaS (Platform as a Service) – Offers platforms for developers to create
applications.
3. SaaS (Software as a Service) – Provides ready-to-use software applications
online such as Gmail or Microsoft 365.
Cloud Service Providers
Some popular cloud service providers
include:
• Amazon Web Services (AWS)
• Microsoft Azure
• Google Cloud Platform (GCP)
• IBM Cloud• Oracle Cloud
Characteristics of Cloud Computing
- On-Demand Self-Service
Users can access computing resources like storage, servers, or applications whenever they need, without requiring human help from the service provider. - Broad Network Access
Cloud services are available over the internet and can be used through laptops, mobiles, or tablets from anywhere. - Resource Pooling
The cloud provider uses a shared pool of servers and storage to serve many users at once — like how electricity is shared among homes. - Rapid Elasticity (Scalability)
Resources can grow or shrink quickly depending on demand. For example, if more people use a website, extra servers can be added automatically. - Measured Service (Pay-as-You-Use)
Users pay only for what they use, similar to an electricity bill. This helps in saving cost and managing usage efficiently.
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