What is cloud computing technology and its scope

Hi, some of my answers to your question.

what it is actually Cloud Computing?
It is a type of computing that involves in sharing computing resources rather than having local servers or personal devices(PC, Hard Disk) to handle applications.
Dictionary meaning: the practice of using a network of remote servers hosted on the Internet to store, manage, and process data, rather than a local server or a personal computer.
These services are based on Internet.

How it functions?
If you don't have enough money to get a physical storage device(Hard Disk, Servers) to store your large datas, then Cloud Computing service providers will help you in store your data in their Servers which are shared by many and sharing money. It allows access to information and computer resources from anywhere that a Internet connection is available.
Some of the cloud services include online file storage, social networking sites, webmail, and online business applications.

What is its penetration in the Indian market?
Not only India, but China is also competing in this Cloud Computing market. It is now growing based on cost effectiveness in India, More and more Small companies are entering in to this service realising its benefit of saving cost and secure. In future also as the Internet facility grows this Cloud computing will also grow.

Can I know what is its future scope from job perspectives?
Some of the companies I will list here for your Job options.
1. Infosys,
2. TCS
3. Wipro Technologies
4. InstaCompute – Tata Communication
5. Zenith InfoTech Limited
6. Cirrologix Private Limited
7. Synapse India – Noida
8. App Point – Bangalore
9. Clogeny Technologies Private Limited
10. Eaze Work – Noida
11. Net Magic Solutions
12. Orange Scape
13. Ozonetel Systems – Hyderabad
14. PK4 Software Technologies Pvt. Ltd. – Bangalore
15. Ramco Systems – Chennai
16. Reliance Data Center – Mumbai
17. Synage – Mumbai
18. Wolf Frameworks
19. Ctrls Datacenters Limited
20. Cipher Cloud

Regards,
Manu

Hi Prasanna,

In addition to the above answers by Manu, Here I am trying to give answers from a different perspective,

what is cloud computing?
Cloud computing refers to sharing of resources in a cloud based model to achieve higher utilization of resources like storage, RAM, servers and software. This will help to increase cost efficiency of any organization. Any devices should connect to the cloud to use the resources.

How it functions?
Cloud computing functions more similar to the torrent website where different parts of same file is downloaded from different servers but in a secured way. Torrents are consider as illegal in many countries. Cloud computing overcomes the disadvantage of torrent websites.
In cloud computing, all the computing utilities like storage, servers, RAM, software will be placed in a centralized network which is connected to the internet. Any devices want to use this resources should connect to the cloud and use the resources for a particular period of time. After sometime some other devices will use the same set of resources. Hence it will improve the efficiency of the resources within an organization.

What is its penetration in the Indian market?
Many organization understand the benefits of Cloud computing. Many Indian companies interested to form a cloud based network to provide different services to the people hence they can achieve higher utilization and profit. By realizing the benefits of cloud computing, Indian government started a new cloud based project called 'Meghraj' to provide cloud based services and to increase its cost effectiveness.

Can I know what is its future scope from job perspectives?
Cloud computing is basically a research oriented field where there is room for huge development. As government pitch into this field, there is good scope for cloud computing in future. It is expected that cloud computing field will create 3 lakh job opportunities in 2015. Knowledge of VMware will help you to get good jobs in this field.

Cloud computing if said in simple way, is like taking godown space in rent. The provider of cloud computing allows users to use specified space for data storage and retrieval for specified charges.

For the user,it is benefit because he is not to bother about the infrastructure and periodical maintenance. The limitation of space will not be a limitation for him.

It is hence a very developing area in computing sector. Even some mobile service providers also have started attracting users by offering free bundled cloud space on purchase of handsets or conections. That shows it is the trend.

I give below link to an article posted few years ago in ISC What Is Cloud Computing And More About Cloud Computing. That can be of help to a beginner on this topic.

In that same link you may get to read more articles which may give you a reasonable basic idea on Cloud Computing.

Definition of Cloud Computing: A group of distributed computing environment which provides services like Utility Computing, Resource Sharing, Elastic Computing, etc. is know as Cloud Computing.

Types of Cloud:
1. Public Cloud: Network/Cloud which is maintained by government organization or service provider organization.

2. Private Cloud: Network/Cloud which is maintained by individual person.

3. Hybrid Cloud: Combination of Public and Private clouds.

This is a misconception that in Cloud Computing, there is no use of Secondary Storage. Actually, it is not compulsory to use secondary storage medium. But what if we want to store the data on our computer, then we have to have secondary storage like Hard-disk drive, Compact Disk, USB storage, SD cards, etc.

Cloud is a collection of Local Area Network and/or Virtual Private Network. We can access the resources through internet. It provides the following computing; like

1. Elastic Computing: Provide variable use of computer resources to balance the workload on the network. Workload can be in terms of cost, resources, and quality.

2. Utility Computing: Usability of computer resources based on PAY-PER-USE model, means it provides computer resources on demand as a metered service.

3. Grid Computing: It provide the computing service to break the big task into smaller pieces and distribute among the heterogeneous group of computers called grid, to process.

4. Cluster Computing: It provides the computing service to group similar tasks and give to homogeneous group of computers called cluster, to process.

5. Distributed Computing: It is a combination of grid computing and cluster computing, which provide middle-ware services to different computing environment.


Classification of Cloud Services:
1. IaaS: Infrastructure as a Service provides use of physical machine like computer hardware, storage, processing unit, etc., virtual machine and virtual storage. For example, Oracle VirtualBox.

2. PaaS: Platform as a Services provides the run time environment for the software applications to develop, deploy applications as point-and-click tools feature. For example, Google App Engine.

3. SaaS: Software as a Service provides software application services to the client via internet. For example, Billing and Invoice system.

4. NaaS: Network as a Service provides internet connection and bandwidth to the client to access network/cloud, with proper routing protocol and network security. For example, Any ISP (Internet Service Provider).

Advantages of Cloud:
1. The resources can be accessed anytime, anywhere by the client.
2. Cost effective as less hardware is use at the end user side.
3. Flexibility as the data/information can be updated by end user.

Disadvantages of Cloud:
1. The information/data is in the control of third-party which provides cloud services.
2. Lock-In, means the end user cannot switch to the another CSP (Cloud Service Provider).
3. Security and Protection issues as the hardware/storage is reliable or not, we do not know.

Cloud Computing Technology: Cloud computing promises several attractive benefits for business and end users.Cloud computing services can be private,public or hybrid.It is a way to increase the capacity or add capabilities without investing the new infrastructure.
Major examples of cloud computing we are using

1.Google Drive
2.Apple icloud
3.Amazon Cloud Drive
4.Cloud Hardware

I am teaching Cloud Computing subject in MCA 6th semester and recently, I have organized a two day Workshop on Cloud Computing in my AKS University, Satna on 27/02/2015 and 28/02/2015.

I have gained some more practical information about cloud computing and I want to share it with you. There are some terminologies that I have learned, which is a part of cloud computing as follows:

1. Virtualization: All the resources are virtual to the end-user/client, the resources like machinery, computer hardware, etc. are not visible to the user because the resources are managed by multi-tenants.

2. Hypervisor: This is also known as Virtual Machine Monitor. It is a firmware, which is used to monitor and manage the execution of operating system either on virtual platform or standalone platform.

3. Multi-tenant: Multi-tenant is a group of individuals, which provides resources like CPU for processing, Secondary memory for storage, etc. to the client through the server. As server cannot handle the all the (millions/billions of) request from the client, therefore, server receives the request from the client and give it to the particular multi-tenant. It offers virtual isolation among each other. No multi-tenant is related to each other, they work individually.

4. Service Oriented Architecture: Cloud is existed already, since we are using network. But if some individual network provide services to the outside users for processing or storage, then it is called cloud. Cloud provide services to the clients/users, therefore it follows service oriented architecture.

5. Cloud Service Provide: Abbreviation is CSP. A network which provides services to the end-user, it is known as cloud service provider.

6. Cloud Computing Architecture: It comprises of two components, as follows,
a. Front end: Visible to the end user, but virtual.
b. Back end: Refers to the services of cloud, like storage, virtual machines, security measures, protection, etc.

7. Instance: An instance in cloud computing is a variable which takes the request from client and transfer it to the server. It is quite difficult to create instance. Most of the server uses Linux as platform, so creating an instance is much more difficult.

8. Cloud Computing Infrastructure: It comprises of following components:
a. Hypervisor: as discussed above
b. Network:
c. Server:
d. Storage:

9. Cloud computing management: It comprises of following components:
a. Audit system backups:
b. System data flow:
c. Beware of Vendor lock-in:
d. Knowing provider's security procedures:
e. Monitor capacity planning and scaling capabilities:
f. Monitor audit-log use:
g. Solution testing and validation:


If I get more information, I will share it with you.

Regards

Dear Prasanna,

Cloud Computing is a part of SMAC technology.
1. S-Soft Computing-related with artificial intelligence, neural network, and fuzzy logic.

2. M-Mobile Computing-related with mobile communication and network.

3. A-Algorithm Computing-related with programming concept and methodologies.

4. C-Cloud Computing-related with cloud storage and internetworking.

All above four computing technologies are interconnected with each other in terms of information exchange.

Dear,

In some books SMAC technologies is defined as given about in my post and in some journals cloud computing is defined as a SMAC Computing i.e. Social Mobile Analytical Cloud Computing. Actually this computing technology gathers and connects social information, mobile networking information and large data analysis so that it develops a cloud in itself.

I will share more information as much as I can.