Ans documentations. Cloud computing means sharing resources,

Ans 1)

The term Cloud is widely used metaphor for the Internet. This term means virtual space and capacity which is meant for sharing information by using internet connectivity through satellite over the globe. And hence, cloud symbols are now very widely used to portray the Internet in documentations.
Cloud computing means sharing resources, software, and information via a network, i.e. through internet. All this knowledge and information is stored on physical servers. These servers are maintained and controlled by a cloud computing provider, such as Google in reference to Google Drive. As a user, one can access stored information on the cloud via the Internet.
By using cloud storage, one doesn’t need to store information on any hard disk. Instead, anyone can access the cloud data from any location and can download it to any device available for it, including laptop, tablets and smartphones. Also file editing in Microsoft word and excel files can be done in parallel
Different types of cloud computing services are available worldwide to suit different needs. While some cater to individual users who want photos, documents, and videos, others to store and are destined for companies that need extensive platforms to develop IT applications and store huge organisation data which can be accessible worldwide any time anywhere if anybody needs that data to access for reference and work.
Similarly for hospitality industry also its import and safe also to save all data and reports everything on cloud so that hassle of getting delayed and miss placed is not there .also easily accessible all around the world for reference and quick use of the same to get patient checked and all this system leads to time saving and comfort of patient and hospital management too
Concept and application:

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Benefits of cloud computing
Cloud computing is a big shift from the traditional way businesses think about IT resources.

1. Cost
It basically eliminates the extra cost of buying hardware’s, software and setting up cost also the place required and safety issues like of theft.

2. Speed
With just a few clicks all data can be uploaded and can be retrieve so that it saves time and authenticity of data .hence making overall system more flexible.

3. Global scale
The benefits of cloud computing services include the ability to scale elastically i.e. power, storage, bandwidth—right when it’s needed and from the right geographic location.

4. Productivity
Cloud computing removes the need of racking and stacking so IT teams can spend time on achieving more important business goals.

5. Performance
The biggest cloud computing services run on a worldwide network of secure datacentres, which are regularly upgraded to the latest generation of fast and efficient computing hardware. .

6. Reliability
Cloud computing makes data backup, disaster recovery and business continuity easier and less expensive, because data can be mirrored at multiple redundant sites on the cloud provider’s network.

1. Worldwide Access. Cloud computing increases mobility, as you can access your documents from any device in any part of the world. For businesses, this means that employees can work from home or on business trips, without having to carry around documents. This increases productivity and allows faster exchange of information. Employees can also work on the same document without having to be in the same place.
2. More Storage. In Earlier times memory was limited and if space is not left then USB was needed. Cloud computing thus supplement with extra storage,
3. Easy Set-Up. Immediate starting of resources, software and information which are saved on cloud .hence can set up a cloud computing service in a matter of minutes.
4. Automatic Updates. This helps in saving lot of time in updating and downloading the applications and data saved on cloud, which is available hands on to use.
5. Reduced Cost. Cloud computing is often inexpensive but in long run n data security pointwise it is safe and with minimal cost. There are numerous cloud computing applications available for free, such as Dropbox, and increasing storage size and memory is affordable.

Major challenges faced can be:
1. Security. On cloud, data is stored at third party ecosystem. Everyone from around the world is using common server and may cause security vulnerabilities. Confidentiality of data is exposed to threats like virus attack and malware. For example, server provider like Google Cloud, Connect come with customizable spam filtering, SSL enforcement and email encryption for secure HTTPS access.

2. Privacy. Cloud computing service also comes with the additional risk that unauthorized users might access your information. For this, cloud computing service provider offer password protection and operate on secure servers with data encryption technology.

3. Loss of Control. Cloud computing entities control the users. This includes not only how much you have to pay to use the service, but also what information you can store, where you can access it from, and many other factors. You depend on the provider for updates and backups. If for some reason, their server ceases to operate, you run the risk of losing all your information.

4. Internet Reliance. If any geographical area doesn’t have Internet access, then that won’t be able to open any of the documents stored in the cloud.

Potential Benefits of Cloud Migration and Conclusion:
Number of problems can be resolved when moving to cloud.
1. Consider a case where your individual application is experiencing huge increase in traffic. But the infrastructure cannot be scaled on the fly to meet the increasing demand.
2. Cloud reduce operational costs, and in parallel increase the effectiveness of IT processes.
3. Cloud provides provision for fast application implementation and deployment.
4. Consider, clients want to expand their business at new geographical location. But you investigate that it is a challenge to set up the multi-region infrastructure along with provisions of all the associated maintenance, time, human, and error control effort.
5. It’s becoming more difficult and expensive to keep up with your growing storage needs.
6. Cloud computing environments allow remotely located employees to access applications and work via the Internet.
7. To establish a disaster recovery system but setting it up for an entire data centre could double the cost. It would also require a complex disaster recovery plan. Cloud disaster recovery systems can be implemented much more quickly and give you much better control over your resources.
8. Tracking and upgrading underlying server software is a time consuming, yet essential process that requires periodic and sometimes immediate upgrades. In some cases, a cloud provider will take care of this automatically. Some cloud computing models similarly handle many administration tasks such as database backup, software upgrades, and periodic maintenance.
Capex to Opex : Cloud computing shifts IT expenditure to a pay-as-you-go model, which is an attractive benefit, especially for start-ups.


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