CLOUD COMPUTINGRICH SANGPROM

What is cloud computing?• “Cloud computing is a model for enabling

ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction.”

- NIST Definition

Characteristics• On-demand self-service• Broad network access• Resource pooling• Rapid elasticity• Measured service

Service Models• Software as a Service (SaaS)• Platform as a Service (PaaS)• Infrastructure as a Service (IaaS)

Software as a Service (SaaS)• Gives the user the ability to utilize

applications hosted on a cloud infrastructure• Borrowing/renting software online• Google Documents

Platform as a Service (PaaS)• The user is able to deploy custom

applications and services• User has control over deployed

applications• Similar to an app store

Infrastructure as a Service (IaaS)• Technology from a cloud provider is

outsourced to a user/client as a service• User has control over operating systems,

storage, and deployed applications• Pay per use basis

Deployment Models• Private Cloud

- Single organization

• Community Cloud - Multiple organizations

• Public Cloud - General public

• Hybrid Cloud - Multiple cloud infrastructures - (ex. private cloud + oublic cloud)

Several Significant Companies in Cloud Computing