The Ultimate Guide to Cloud Computing for Beginners!. ESSENTIALS OF CLOUD COMPUTING

 1.ESSENTIALS OF CLOUD COMPUTING

Cloud computing: which type of computing does in cloud that type of computing is called cloud computing

Cloud: shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services)

Q: How computing resources will get shared pool configuration?

Ans: with virtualization 

Q: which type of networking is used to connect shared pool of configurable computing resources?

Ans: WAN network -Internet. so, cloud is ubiquitous (cloud can be accessed from anywhere).

Q: does cloud have ability to increase or decrease IT resources if you want?

Ans: yes. Example: if you need more storage today, you can increase IT storage resources or if you need less storage today, you can decrease IT storage resources, so cloud has on-demand Newtwork access characteristic.

Q: do we need to purchase required IT resources if you need on particular time?

Ans: No because cloud consumption-based pricing model.

The term ‘cloud’ is defined by NIST [10] as follows: 

 “Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. This cloud model is composed of five essential characteristics, three service models, and four deployment models.” 

 Basic structure of cloud computing: 

There are two types of a cloud environment:

1. The end user who has no idea about cloud complexity
2. The cloud service provider who has the liability of controlling the complete cloud environment and offer services to the consumer. 

One of the jobs of the supplier is safety, and it assures the consumers the degree to which their data is protected. The cloud service supplier is also accountable for IT resources, uploading, and other services offered to the user. Various services and resources are provided to users by the cloud provider, as suggested and managed by the cloud administrator, in the cloud environment, as shown in above figure.

Cloud computing involves a cloud consumer, cloud provider, cloud auditor, cloud broker, and cloud

carrier, as shown in Table 1.1.

Data center: which building has a collection of IT resources.