Introduction
Cloud computing allows you to access computing services such as servers, storage, databases, and software over the internet. Instead of maintaining physical infrastructure, you use cloud providers like AWS, Azure, and Google Cloud.
Why Cloud Computing Is Popular
- No need to buy expensive servers
- Pay only for what you use
- Faster application development
- High-level security
- Global reach and scalability
Types of Cloud Services
IaaS – Infrastructure as a Service
Provides servers, storage, and networking. Examples: AWS EC2, Azure VM.
PaaS – Platform as a Service
Provides application platforms. Examples: AWS Elastic Beanstalk, Heroku.
SaaS – Software as a Service
Provides ready-made applications. Examples: Gmail, Netflix, Google Docs.
Cloud Deployment Models
- Public Cloud: Used by everyone (AWS, Azure)
- Private Cloud: Used internally by organizations
- Hybrid Cloud: Mix of public + private
Real-Life Examples
- YouTube stores videos in cloud storage
- Instagram photos are stored like S3 objects
- Online banking uses secure cloud networks
Benefits of Cloud Computing
- Cost-efficient
- Highly available
- Automatic scaling
- Strong security
- Reliable backup and recovery
Conclusion
Cloud computing is the backbone of modern technology. Understanding its basics is important for students, developers, and IT professionals.
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