What is Cloud Computing

Computing as service over the Internet.Cloud computing, is the delivery of on-demand      computing resources everything from applications to data centers over the Internet on a pay-for-use basis.

 Cloud Computing Services

Sofware as Service (SaaS) – Cloud based applications or software that run on distant computers that are owned by other and users are allowed to access it via Internet.

Platform as Service (PaaS) – Cloud based environment with complete life cycle of building and delivering cloud application without the cost and complexity of procuring underlying hardware,software, provisioning and hosting.

Infrastructure as Service (IaaS) – It is a service provided by companies with computing resources including Servers, Network, Storage and Data Center on pay-per-use.

Benefits of Cloud Computing

Elastic Resources – Scale up and down resources quickly to meet requirements.

Pay for USE – It is a metered service, so pay only for what you use.

Self Service – The IT resources you need with self service acces

 1. SaaS – Software as Service

These are Business application at enterprise level which are ready to deploy to meet the today’s demand.

Examples : Mobile Messaging, Email Marketing, Enterprise Content Management, Analytics, API Management, Asset Management, Business Process Management, Cloud based HR platform.

Benefits :
  • No Additional Costs
  • No initial set costs
  • Automated updates.
  • Pay for what you use.
  • Scalable.
  • Cross Device compatibility
  • Access from any location


 2. PaaS – Platform as Service

Basically this model is widely used to build powerful developer services which can quickly and easily build, run and manage applications of all types.

Examples : Operating Systems DBMS, Scripting Environment, Server Software, Tools Design and Development.

Benefits :
  • Saving Physical Infrastructure.
  • Flexibility
  • Adaptability
  • Security

3.IaaS – Infrastructure as Service

It is fully a self serviced and self managed environment which provides access to computing resources in virtualized environment from a pool of hardware resources.

Examples : Dedicated Bare Metal Servers, Private Cloud, Big Data, Hardware Firewall.

Benefits :
  • Scalability
  • Utility Style costing
  • No Hardware Cost.
  • No Single Point of failures.

Deployment Models
Public Cloud
: Public clouds are owned operated by companies and will offer access to affordable computing resources to other organizations or individuals.

Private Cloud : Private clouds are owned and operated by single company that controls the virtualized resources are customized and used by various business lines and supporting groups.

Hybrid Cloud : Hybrid could uses the foundation of Private cloud combined with strategic use of public cloud called as Hybrid cloud. The combination Public cloud and Private cloud there by creating Hybrid Cloud