What Is Public Cloud?

What Is Public Cloud?

What Is Public Cloud?

What Is Public Cloud?

Public cloud is a cloud infrastructure provisioned for use by the general public, individuals or businesses. Essentially, third-party public cloud providers lease servers within a virtual environment, which is accessible over the Internet. Users can then access these servers by purchasing public cloud services such as cloud servers, data storage, and other cloud-related services.

Benefits of Public Cloud

Public cloud is considered a cost-effective solution because you don’t need to buy or install physical servers. Public cloud also frees you from operation and maintenance (O&M) of servers, reducing the total cost of ownership (TCO). This allows you to develop your website or applications without worrying about O&M or purchasing additional hardware as you would with a private cloud solution. Public cloud also works on a “pay-as-you-go” model, which allows you to pay for only the resources that you need.

When Should I Use Public Cloud? Is Public Cloud Suitable for Me?

Everyone can benefit from using a public cloud solution in their IT infrastructure, but the benefits may vary based on the scale of your business. Public cloud helps small and medium sized businesses to speed up the software development process as they no longer need to worry about the management and maintenance of data centers. For larger enterprises, cloud computing helps businesses to scale up easily by providing virtually unlimited compute power and storage space. In short, public cloud is ideal for businesses that have fluctuating demands or applications dedicated to the public, like Dropbox, Netflix and Evernote.

Is Public Cloud Safe? How Secure Is the Public Cloud?

Although public cloud is accessible to the public over the Internet, your data will be isolated from that of other users through virtualization. Public cloud providers may also provide different levels of isolation, including physical isolation, for additional security. Public cloud providers also proactively ensure that their servers are free from vulnerabilities and are updated with the latest software patches. However, customers are still ultimately responsible for how data is used in the cloud, including access, authentication, encryption, and application configuration.(What Is Public Cloud?)
Why Public Cloud?

Many enterprise businesses look to public cloud as a way to scale existing IT resources on demand without committing to expanding their physical IT infrastructure. For instance, instead of purchasing a physical desktop machine, a company can purchase a virtual desktop license. The virtual desktop can be spun up or deactivated in minutes and can be located anywhere, instantly.

The public cloud is also a popular solution for storage needs since data stored on a public cloud is backed up and accessible from anywhere. There are many different types of storage plans, and data that does not need to be accessed frequently can often be stored in the public cloud very cheaply.(What Is Public Cloud?)

For companies that host an application with periods of peak usage, the public cloud makes perfect sense because the extra computing power is only needed for a short time.

Using the public cloud can save businesses money in a couple of different ways:

  • Lower equipment purchase costs: Because employees can access and pay for cloud-based resources only when they need them, using public cloud–based desktops and applications is often less expensive than purchasing physical IT equipment or software packages that may or may not be used and will need to be maintained.
  • Lower equipment maintenance costs: With public cloud-based services, the cost of maintaining IT equipment is also passed on to the cloud service provider.

A small or new business may have an easier time migrating applications to the public cloud; organizations with a large legacy IT infrastructure and applications have more to consider and plan for. However, more and more enterprise businesses are moving toward public cloud as one element of a multi-faceted IT plan. This way, they can access the benefits of public cloud while also maintaining the different benefits that come with on-premises architecture and private cloud options.(What Is Public Cloud?)

How Public Cloud works

A public cloud relies on a virtualized environment to provide an extension of a company’s IT infrastructure, allowing that company to host certain aspects of its infrastructure and services on virtual servers that are offsite and owned by a third party. Public cloud service providers have different strengths, and they offer a wide variety of services and pricing models.

Companies that are considering a migration to public cloud need to carefully consider their options when it comes to choosing a provider, especially if they will be locked into a long-term contract. Careful planning can help to keep costs down on monthly cloud services bills, but organizations with unpredictable public cloud usage may find it hard to avoid spending a lot of money on public cloud services when usage suddenly surges. (What Is Public Cloud?)

Because servers in the public cloud share data from multiple companies, security in public cloud is another issue that IT managers will want to weigh. Encrypting data is a good way to ensure stronger security, but if you are using a combination of public and private cloud (also known as a hybrid cloud), not all encryption platforms work across both public and private clouds. There is also an inherent security risk whenever data is moved between a private data center or private cloud and a public cloud.(What Is Public Cloud?)

One last consideration is the location of your public cloud service provider. Data privacy laws in many countries require certain types of data to be stored in-country. These laws change frequently, so it’s a good idea to choose a cloud service provider that is located in your country and can confirm that the servers where your data will be stored are local and in compliance with regional laws. There is also the issue of latency—if your data is being hosted on a different continent, it may take longer than if it were stored close by. (What Is Public Cloud?)

October 9, 2021
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