Cloud Computing refers to the process of storing, accessing data and programs over the internet instead of your computer’s hard drive or your on premises servers. Third party cloud allows you to focus on your core business instead of worrying about maintaining and managing the IT infrastructure. Cloud Computing offers distinct models of cloud in terms of ownership, size, security and access. Cloud providers allows you to choose among different cloud models which best suits your organization requirements.
A cloud deployment model refers to a specific kind of cloud environment that can be customized according to user’s requirement to an extent in terms of size but not in ownership and access context.
The 3 widely used Cloud Models are:
- Public Cloud
- Private Cloud
- Hybrid Cloud
What is a Public Cloud and when should you use it?
A publicly accessible cloud environment owned by a third party is referred as a Public Cloud. It can be owned, managed and operated by a business, academic or a government organization. Public cloud services can be free or can be sold on demand, allowing customers to pay according to their usage. This type of cloud model will be the best choice for organizations with low IT budget and less critical data. Public cloud offers you ample benefits in terms of cost, effectiveness, easy and fast implementation and it provides a reasonable level of security. Some common examples of public cloud includes Gmail, facebook, yahoo etc.
Adoption of public cloud would not be a good choice if security is of utmost importance. There are giants like AWS, Alibaba and Azure offering public cloud to their customers at a minimal cost, organizations can be benefited to an extent by adopting this model and can enjoy cloud service at a cheaper price than any other cloud deployment model.
- Multi tenant architecture
- Pay-as-you-go pricing model
What is a Private Cloud and when should you use it ?
When IT services are provisioned over private IT infrastructure for the dedicated use of a single organization соmрriѕing of multiple соnѕumеrѕ (е.g. buѕinеѕѕ units) that is referred to as a private cloud deployment model. Private cloud can be hosted internally or externally and it offers you better security, excellent data management services and high uptime. Private cloud deployment model is specifically designed to match business and organizations requirements. It is highly scalable and reliable and provides greater control over cloud infrastructure too. Some examples of private cloud service providers are: HPE, Dell EMC, VMware, IBM etc.
- Single tenant architecture
- On-premises hardware
- Direct control of underlying cloud infrastructure.
What is hybrid cloud and when should you use it?
A combination of on-premises, private and public cloud computing environment is referred to as a hybrid cloud environment. Hybrid cloud allows workloads to move between private and public clouds as computing needs, resulting in lower costs, providing greater flexibility and more data deployment options. With Hybrid cloud computing environment, an organization can use on-premises private cloud to host sensitive or critical workloads, and a third-party public cloud provider to host less-critical resources, such as test and development workloads. Before, planning to deploy hybrid cloud environment to your organization make sure that it requires API compatibility and strong network connectivity. The major hybrid cloud providers are Alibaba, VMware on AWS Cloud and Cisco on Google Cloud.
- Low Cost
- Leverage Ecosystems i.e., benefits of both public and private cloud environments
Cloud service providers provides 3 major deployment models and it totally depends on the kind of business requirements which model is to adopt.
Below are the things that you need to keep in mind while selecting a cloud environment:
- Compute capacity
- Networking requirements
- Your Budget and TCO metrics