What is Cloud Computing?
Cloud computing is basically a collection of different services provided by different companies.
It mainly depends on resource sharing using internet enabled devices that allow the function of application software.
The Cloud can serve a wide range of functions over the Internet, such as storage from virtual servers, virtual applications, authorization of desktop applications etc.
By implementing resource sharing, cloud computing is able to achieve reliability and economies of scale.
There are mainly two types of cloud computing models which are service based and deployment based.
Cloud Deployment Models
Cloud computing deployment models are based on location. In order to know which deployment model would best suit your organization requirements, it is necessary to know the four deployment types.
Public Cloud, is a type of hosting which cloud services are delivered over a network for public use.
- Customers do not have any control over the location of the infrastructure.
- The cost is shared by all users, and are either free or in the form of a license policy like pay per user.
- Public clouds are great for organizations that require managing the host application and the various applications users use.
Private Cloud, is a cloud infrastructure that is solely used by one organization.
- It gives organizations greater control over security and data which is safeguarded by a firewall and managed internally.
- It can be hosted internally or externally.
- Private clouds are great for organizations that have high security demands, high management demands and uptime requirements.
Hybrid Cloud, uses both private and public clouds, but can remain separate entities.
- Resources are managed and can be provided either internally or by external providers.
- A hybrid cloud is great for scalability, flexibility and security.
- An example of this is an organization can use public cloud to interact with customers, while keeping their data secured through a private cloud.
Community Cloud is an infrastructure that is mutually shared between organizations that belong to a particular community.
- The community members generally share similar privacy, performance and security concerns.
- An example of this is a community cloud at banks, government in a country, or trading firms.
- A community cloud can be managed and hosted internally or by a third party provider.
- A community cloud is good for organizations that work on joint ventures that need centralized cloud computing ability for managing, building and executing their projects.