Cloud models

Cloud computing models

Cloud services model is how cloud services are made available to client. When we used the cloud services, the needs of each person is different. Therefore we should understand the how that services are running. Following are explain how types of cloud services and their features.

Deployment model

Defines the purpose of the cloud and the nature of how the cloud is located and management of the cloud’s platform. There are four types of deployment models

1.      Private cloud

Private cloud infrastructure is suitable for single organization comprising with multiple consumers. That private cloud can be formed as internally or externally. The private cloud allows for increased security, reliability, performance, and service. Private Cloud is mostly suited for sensitive data, where the customer is dependent on security of the data. And also it suited for core systems (Johnson, 2017).

Main features: - Maximum level of reliability and scalability

                        - Generator control over cloud infrastructure

                                    - Design for businesses and enterprises (hackernoon.com, 2017)

2.      Public cloud

Now a day’s most common cloud model is public cloud. It is publically shared virtualized resource. Public Cloud is always hosted by a professional Cloud supplier. Public clouds most commonly interested in the function of collaboration, social network, CRM (customer portals) and the storage (Vold, 2012), (www.google.lk, n.d.).

Main features: - Reasonable levels of security

-          Ease of implementation process

-          Cost effective and low operational cost (hackernoon.com, 2017)

3.      Community cloud

Community cloud model is a cloud infrastructure shared by a group of organizations of similar industries and backgrounds with similar requirements (ishabhsoft.com, 2013). This type of clouds can be host on or off sites.

Main features –     private template creation and distribution

-          app exchange integration

-          improved usability

4.      Hybrid cloud

Hybrid cloud is combination of two or more models. That combinations can be private cloud, public cloud and community cloud. Hybrid clouds ensure the safety, scalability and performance in system. Hybrid is allowed BYOD (Bring Your Own Device policy).

            Main features: - smooth migration across multiple cloud providers

-          High availability across multiple clouds

-          Automatic scaling for load spikes.

                                   

Service model

It defines the services that you can access by using   cloud platform and their features. There are main three type of service models,

1.      IaaS (Infrastructure as a Service)

Provides ability to use software application demand over the internet

2.      PaaS (Platform as a Service)

Provides the environment to develop, run and manage web applications

3.      SaaS (Software as a Service)

Provides resources including server, storage, network, load balancers, firewall, IP addresses and etc.