What is Public Cloud?
A Public Cloud is a pool of technology services typically covering IaaS, PaaS and SaaS. The computing infrastructure that provides public cloud services is owned and managed by a third-party company. It is automatically provisioned and allocated among multiple clients through a self-service browser interface or via API.
Primarily public cloud services are used for various companies for both small, medium and large scale operations. Using a public cloud provides easy ways to scale or share out workloads that may experience demand fluctuations. Public cloud services also provide the ability to provision and tear down environments quickly and easily as required.
Public cloud services can easily be integrated into an existing IT environment to provide additional capabilities and redundancy to the on-premise systems.
Using public cloud services offers a wide range of services and applications for organisations to take advantage of with minimum up-front cost or commitment.
What is the Difference between Public Cloud, Private Cloud, and Hybrid Cloud?
Cloud is a collective term referring to the increasingly popular methods to implement technology and software services over the internet. There are three different types of cloud implementations available – Public Cloud, Private Cloud and Hybrid Cloud.
Before choosing a cloud suitable for your business, it helps to find out and determine the difference between the three types of cloud implementations to better understand which one is tailor fitted for your business needs.
The public cloud is owned and managed by different cloud service providers, commonly by third-party companies or outsourced. The public cloud is primarily accessed over the internet and in most cases using a secure VPN internet connection. Most of the public cloud services offered these days are multi-tenant. In other words, the provider offers the solution in a shared environment while partitioning the customer’s data to ensure safety and security for all the clients.
On the other hand, there are public cloud that offers single tenant options. A single tenant option in public cloud offers a dedicated solution for a specific client. Data security and sovereignty requirements may require organisations to adopt these types of “dedicated” cloud services.
The private cloud is the type that an enterprise can build within their own data centers – typically using similar technologies and design principles as public cloud services. Private cloud environments run on technology infrastructure that is owned and managed by the organisation, but able to provision technology services to the organisation under a consumption model.
Using a private cloud allows organisations to quickly adapt to business requirements whilst maintaining complete ownership and governance over their IT estate. Private clouds can range from consolidated server environments on virtual infrastructure to complete self-service consumption of IT services from internal resources.
Experts consider the environment as a true private cloud if this is a dynamic allocation of the physical capacity and usually done automatically instead of manual adjustments or settings.
The hybrid cloud is a combination of the public and private cloud services and capabilities. A great example of a hybrid cloud is when an organisation can run applications in its own private cloud but needs to utilize public cloud services to accommodate peaks in demand or use capabilities that are not available from the on-premise IT systems.
A hybrid cloud allows organisations to run workloads on both on-premise environments or by utilising cloud services as required. This approach can provide significant benefits in terms of cost, governance, security and flexibility.
When to use Public Cloud?
As time goes by, more and more companies are utilising clouds to make the most out of their business. This is not surprising because the cloud offers a handful of benefits that a business can reap.
If your company is not using cloud your competitors may be gaining advantages over you in delivery of their digital strategy. But, if you want to know more about cloud and where public cloud services can be used, you’ve come to the right place.
Adopting public cloud services can benefit organisations of any size. Whether to provide end user desktop services or host mission critical database platforms – most, if not all, IT requirements of modern IT organisations can be catered for.
Public Cloud Pros and Cons
Pros of Public Cloud
Public cloud services can provide the following benefits:
Most, if not all public cloud solutions offer ultimate scalability across compute, storage and network services. This also translates into cloud scale capabilities across PaaS and SaaS services as well.
Unlike private and hybrid cloud, public cloud is more affordable particularly when it comes to supporting transient or temporary workload requirements.
Public cloud services are built and designed to run with maximum availability with redundancy within and across data centres and continents.
Public cloud services are flexible that can be provisioned, consumed and destroyed on demand as required with little to no setup or provisioning lead times.
Cons of Public Cloud
While there are numerous advantages of using a public cloud for your business, there are risks and trade-off’s to be considered:
Inadequate governance and management public cloud service usage can result in costs that are substantially higher than expected. Unplanned workloads or incorrectly provisioned cloud services can result in costs adding up very quickly.
Whilst security of the cloud is managed by the cloud service provider, the security in the cloud falls back to the customer. Locating organisations data outside the corporate data centre always introduces the risk of a data breach. A simple misconfiguration of a cloud service can expose organisations data to the internet.
As cloud services mature the complexity and skill required to implement and operate cloud platforms increases. Deploying applications on a public cloud service will in many cases be a complexity multiplier by the time the system is commissioned in production.
Leading Public Cloud Providers
Public cloud providers have seen rapid growth as cloud adoption is a key element or many organisations IT strategy. With such a vast array of services and capabilities there are many options available to commence a cloud journey. We have put together a list of the most common providers in the industry..
Gartner Magic Quadrant
In choosing a public cloud provider suitable for the company, you can use one of the most trusted public cloud provider techniques – the Gartner Magic Quadrant.
The Gartner’s Magic Quadrant is considered as the first step to understand the technology providers you might consider for a public cloud service. Depending on the types of investments you are looking for your business, each quadrant has its own benefits and advantages you can check.
Amazon Web Service
Amazon Web Services (AWS) is considered as the undisputed market leader in cloud computing. The Amazon Web Services offers a complete range of PaaS, IaaS and SaaS services.
Oracle Cloud provides a comprehensive, integrated suite of cloud services across IaaS, PaaS and SaaS. Oracle provides strong integration between on-premise and cloud based services across all cloud service tiers.
Google Cloud provides a wide range of cloud services with particular strengths in AI and Machine Learning capabilities. Google are rapidly evolving services around data management and migration which will be worth keeping an eye on.
IBM Cloud is not yet considered as part of the big three in cloud computing vendors. But, as time goes by, IBM Cloud is becoming stronger and a crowd favorite.