Cloud Computing Fundamentals

Definition and Characteristics

• Cloud computing is a model for delivering IT services over the internet
• On-demand access to a shared pool of computing resources (e.g., servers, storage, applications)
• Key characteristics:
  • On-demand self-service
  • Broad network access
  • Resource pooling
  • Rapid elasticity
  • Measured service

Service Models

• Infrastructure as a Service (IaaS): Provides virtualized computing resources (e.g., servers, storage, networking)
• Platform as a Service (PaaS): Provides a complete platform for developing and deploying applications
• Software as a Service (SaaS): Provides software applications over the internet

Deployment Models

• Public Cloud: A third-party provider delivers cloud services over the internet
• Private Cloud: A single organization owns and manages the cloud infrastructure
• Hybrid Cloud: Combines public and private cloud services
• Community Cloud: A cloud shared by multiple organizations with similar interests

Benefits

• Scalability: Quickly scale up or down to match changing business needs
• Cost savings: Reduce upfront capital expenditures and operational costs
• Flexibility: Access cloud services from anywhere, on any device
• Reliability: Built-in redundancy and disaster recovery capabilities

Security and Challenges

• Security concerns: Data protection, compliance, and access control
• Vendor lock-in: Dependence on a single cloud provider
• Interoperability: Integrating with existing systems and applications

Cloud Computing Definition and Characteristics

• Cloud computing is a model for delivering IT services over the internet
• On-demand access to a shared pool of computing resources, such as servers, storage, and applications
• Key characteristics include: • On-demand self-service • Broad network access • Resource pooling • Rapid elasticity • Measured service

Service Models

• Infrastructure as a Service (IaaS): Provides virtualized computing resources, such as servers, storage, and networking
• Platform as a Service (PaaS): Provides a complete platform for developing and deploying applications
• Software as a Service (SaaS): Provides software applications over the internet

Deployment Models

• Public Cloud: A third-party provider delivers cloud services over the internet
• Private Cloud: A single organization owns and manages the cloud infrastructure
• Hybrid Cloud: Combines public and private cloud services
• Community Cloud: A cloud shared by multiple organizations with similar interests

Benefits of Cloud Computing

• Scalability: Quickly scale up or down to match changing business needs
• Cost savings: Reduce upfront capital expenditures and operational costs
• Flexibility: Access cloud services from anywhere, on any device
• Reliability: Built-in redundancy and disaster recovery capabilities

Security and Challenges in Cloud Computing

• Security concerns: Data protection, compliance, and access control
• Vendor lock-in: Dependence on a single cloud provider
• Interoperability: Integrating with existing systems and applications

Learn the definition, characteristics, and service models of cloud computing, including IaaS and more.