January 6, 2025 2 min to read

Cloud Computing

A comprehensive guide to cloud computing, its types, and service models

🎯 Overview

Cloud computing enables users to access computing resources over the internet, eliminating the need for physical infrastructure ownership.

💡 Key Benefits

• 📈 Scalability: Easily scale up or down based on demand
• 💰 Cost-Efficiency: Pay only for resources used
• 🌐 Accessibility: Access from anywhere with internet
• 🔄 Flexibility: Choose from various service options
• 🔧 Maintenance: Provider handles updates and maintenance

☁️ Cloud Deployment Models

Public vs Private Cloud

Public Cloud:
- Shared infrastructure
- Multiple tenants
- Internet accessible
- Examples: AWS, Azure, GCP

Private Cloud:
- Dedicated infrastructure
- Single organization
- Private network
- Examples: VMware vSphere, OpenStack

🔐 Multitenancy

• Shared infrastructure with isolated environments
• Cost-effective resource utilization
• Secure data separation between clients

🚀 Cloud Service Models

IaaS (Infrastructure as a Service)

• Provides virtualized computing resources
• User manages OS and applications
• Examples:

  AWS EC2, Azure Virtual Machines, Google Compute Engine

PaaS (Platform as a Service)

• Development and deployment platform
• Managed infrastructure
• Examples:

  Google App Engine, Azure App Services, Heroku

SaaS (Software as a Service)

• Ready-to-use applications
• Subscription-based model
• Examples:

  Google Workspace, Microsoft 365, Salesforce

📊 Service Model Comparison

📚 Reference

• Cloud Computing Guide
• Public vs Private Cloud
• DevOps Engineer Wiki