What is Cloud Computing?
Cloud computing is on demand availability of computer system resources, especial data storage and computing power without direct active management by the user.
types of cloud computing?
There are 4 main types of cloud computing
- Public Cloud
- Private Cloud
- Hybrid Cloud
- Community Cloud
Public Cloud: Public Cloud allows System and service to be easily accessible to general public. The IT company like Google, Amazon and Microsoft offers Cloud services via internet.
Here you can see this is cloud with some services
Public cloud Model
Advantages & Disadvantages of Public Cloud
| Advantages | Disadvantages |
| Location independence | Low Security |
| Cost Effective (Same resource to multiple user) | |
| Flexibillity (Smoothly intergrate with private cloud) | |
| High Scalability | |
| Reliability | |
| Pay-Per-user |
Private Cloud
Private Cloud allows Systems and Services to be accessible within an organization. The private Cloud is operated only within a single organization.
A Private Cloud is particular model of cloud computing that involves a distinct and secure cloud based environment in which only the specified client can operate.
As with other cloud models, private clouds will provide computing power as a service within a virtualized environment using an underlying pool of physical computing resource.
The cloud is only accessible by a single organization providing that organization with greater control and privacy.
Advantages & Disadvantages of private Cloud
| Advantages | Disadvantages |
| Enhanced security and privacy (not available to general public) | High priced |
| Improved Reliability | Platform scaling |
| Increased Flexibility | Additional Skill |
| Total control | |
Cloud Deployment Models Hybrid Cloud
The Hybrid cloud is the mixture of public and private cloud. Non –crtical actives are performed by public cloud while critical activates are performed by private cloud.
Advantages & Disadvantages of Hybrid Cloud
| Advantages | Disadvantages |
| Scalable (provide public& private | Networking issues (presence of private & public cloud) |
| Flexible and Secure | Security policy |
| Cost Effective |
Cloud Deployment Models Community Cloud
Community Cloud allows system and services to be accessible by group of organization . it share the infrastructure between several organizations from a specific community. It may be managed internally by organization or by the third party.
| Advantages | Disadvantages |
| Cost Effective | Might be excisable to other |
| Sharing among organizations | |
| Security |
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