Cloud Computing and Its Need 

What is Cloud?

The term Cloud refers to a Network or the Internet. In other words, we can say that Cloud is something, which is present at a remote location. Cloud can provide services over the network, i.e., on public networks or on private networks, i.e., WAN, LAN or VPN. Applications such as e-mail, web conferencing, customer relationship management (CRM), all run in the cloud.

What is Cloud Computing?

Cloud Computing refers to manipulating, configuring, and accessing applications online. It offers online data storage, infrastructure and application. We need not install a piece of software on our local PC and this is how the cloud computing overcomes platform dependency issues. Hence, Cloud Computing is making our business application mobile and collaborative.

SERVICE MODELS 

Service Models are the reference models on which Cloud Computing is based. These can be categorized into three basic service models as listed below: 

1. Infrastructure as a Service (IaaS) 

2. Platform as a Service (PaaS) 

3. Software as a Service (SaaS) 

There are many other service models all of which can take the form like SaaS, i.e., Anything as a Service. This can be Network as a Service, Business as a Service, Identity as a Service, Database as a Service or Strategy as a Service. Infrastructure as a Service (IaaS) is the most basic level of service. Each of the service models makes use of the underlying service model, i.e., each inherits the security and management mechanism from the underlying model, as shown in the following diagram:

Benefits - 

Cloud Computing has numerous advantages. Some of them are listed below: 

• One can access applications as utilities, over the Internet.

 • Manipulate and configure the application online at any time. 

• It does not require to install a specific piece of software to access or manipulate cloud application. 

• Cloud Computing offers online development and deployment tools, programming runtime environment through Platform as a Service model. 

• Cloud resources are available over the network in a manner that provides platform-independent access to any type of clients. 

• Cloud Computing offers on-demand self-service. The resources can be used without interaction with the cloud service provider. 

• Cloud Computing is highly cost-effective because it operates at higher efficiencies with greater utilization. It just requires an Internet connection. 

• Cloud Computing offers load balancing that makes it more reliable.

RISKS

 Although Cloud Computing is a great innovation in the world of computing, there also exist downsides of cloud computing. Some of them are discussed below: 

SECURITY & PRIVACY

 It is the biggest concern about cloud computing. Since data management and infrastructure management in the cloud is provided by third-party, it is always a risk to handover the sensitive information to such providers. Although the cloud computing vendors ensure more secure password-protected accounts, any sign of security breach would result in loss of clients and businesses. 

LOCK-IN 

It is very difficult for the customers to switch from one Cloud Service Provider (CSP) to another. It results in dependency on a particular CSP for service. 

ISOLATION FAILURE 

This risk involves the failure of the isolation mechanism that separates storage, memory, routing between the different tenants.

MANAGEMENT INTERFACE COMPROMISE 

In the case of the public cloud provider, customer management interfaces are accessible through the Internet. 

INSECURE OR INCOMPLETE DATA DELETION 

It is possible that the data requested for deletion may not get deleted. It happens either because extra copies of data are stored but are not available or disk destroyed also stores data from other tenants.

SERVICE-ORIENTED ARCHITECTURE(SOA)

 Service-Oriented Architecture helps to use applications as a service for other applications regardless of the type of vendor, product or technology. Therefore, it is possible to exchange data between applications of different vendors without additional programming or making changes to services. 

What Is a Storage Area Network (SAN), Storage Area Networks in Cloud Computing?

Artificial intelligence in robotics and its types

FAU-G: Indian Replacement to PUBG Mobile announced