What is Cloud Computing?
Cloud computing means renting computing resources (servers, storage, databases, networking) instead of owning physical hardware. It provides on-demand access to computing resources over the internet with pay-as-you-go pricing.
Key Characteristics of Cloud Computing
- On-Demand Self-Service: Provision resources as needed without human intervention.
- Broad Network Access: Access services over the internet from various devices.
- Resource Pooling: Shared resources among multiple users for efficiency.
- Rapid Elasticity: Scale resources up or down quickly based on demand.
- Measured Service: Pay only for what you use with transparent billing.
Why Companies Use Cloud?
- No upfront hardware cost
- Faster deployment
- Scalability and flexibility
- Global reach and accessibility
- Disaster recovery and backup
- Access to advanced technologies
Cloud Service Models
Infrastructure as a Service (IaaS)
Rent virtualized computing resources like virtual machines, storage, and networking.
Example: Amazon EC2, Azure Virtual Machines
Platform as a Service (PaaS)
Use platforms to develop, run, and manage applications without managing infrastructure.
Example: AWS Elastic Beanstalk, Heroku
Software as a Service (SaaS)
Access software applications over the internet without installation or maintenance.
Example: Google Workspace, Salesforce
Popular Cloud Providers
🟠 Amazon Web Services (AWS)
Leading cloud provider with the most comprehensive range of services and largest market share.
🔵 Microsoft Azure
Integrated cloud services for building, deploying, and managing applications with strong enterprise integration.
🔴 Google Cloud Platform (GCP)
Cloud services with strengths in data analytics, machine learning, and Kubernetes.
Benefits of Cloud Computing
- Cost Efficiency: Reduce capital expenditure on hardware and pay-as-you-go pricing.
- Scalability: Easily scale resources to meet changing demands.
- Flexibility: Access resources from anywhere with an internet connection.
- Disaster Recovery: Built-in backup and recovery options for data protection.
- Innovation: Access to cutting-edge technologies like AI, machine learning, and big data analytics.