Meaning of Cloud Computing: Cloud Computing is a pay per use model for enabling available, convenient, on-demand network access to a shared pool of configurable computing resources for example: networks, servers, storage, applications, and services that can be rapidly provisioned and released with minimal management effort or service provider interaction. This cloud model promotes availability, and comprises five key characterstics, three delivery models, and four deployment models mentioned below:
Key Characterstics:
1. On- demand self service
2. Ubiquitous network access
3. Location independent resource pooling
4. Rapid elasticity
5. Pay per use
Delivery Models:
1. Software as a service(SaaS)
2. Platform as a service(PaaS)
3. Infrastructure as a service(IaaS)
Main Deployment Models:
1. Private cloud
2. Community cloud
3. Public cloud
4. Hybrid cloud
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