[DC] Cloud Computing

Basic cloud computing

• Essential Characteristics
  • Broad network access
  • Rapid elasticity
  • Measured Service
  • On-demand Self-service
  • Resource pooling
• Service Models
  • SaaS – Software as a Service
  • PaaS – Platform as a Service
  • IaaS – Infrastructure as a Service
• Deployment Models
  • Public
    • Provisitioned for open use by the general public
  • Private
    • Cloud for the exclusive use by a single organization
    • Managed by IT or thirdparty
    • on-premise or off-premise
  • Hybrid
    • Two or more cloud infrastructures combined
  • Community
    • Multiple organisations combined

What is an API

• A precise specification written by providers of a service
• You must follow the specification when using that service
• An API decribes what functionality is available, how ti must be used and what formats it will accept as input or return as output

 Cloud service models

https://www.sevone.com/white-paper/monitoring-cloud-infrastructure-performance-eliminate-visibility-gaps

Software as a Service

• Fully functional application
• E-Mail, CRM, Point of Sale
  • Office 365
  • Google mail
• Salesforce, oracle
• Consumed by end users

Platform as a Service

• Platform to load an application on
• Operation enviorment, Hosting, Services
• AWS, Windows Azure
• Consumed by developers

Infrastructure as a Service

• Automates the deployment of compute, storage, networking, virtualization, and services
• AWS, Rackspace
• Consumed by network engineers