Cloud computing has become an increasingly popular technology for businesses of all sizes. It allows access to a pool of computing resources, such as servers, storage, and programs, within the cloud. This technology has made it easier to obtain resources quickly and let go of resources that are no longer needed. According to a study conducted by Rightscale in 2019, 94% of enterprises are using at least one cloud-based service.
There are several different deployment models for cloud computing, including public cloud, private cloud, hybrid cloud, and community cloud. Each model has its own set of characteristics, advantages, and disadvantages. In addition, there are three different service models of cloud computing: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). It is important to select the appropriate cloud deployment model and service model for your business needs.
Deployment Models in Cloud :
Cloud deployment refers to the type of cloud service and the model that determines who is accountable for these services. It decides the architecture of your cloud, the computing resources you use, the settings you can modify, and the percentage of the building you own. The cloud deployment model also establishes relationships between your cloud infrastructure and users.
There are several cloud deployment models, each with its own advantages and disadvantages. Here are the most important ones:
● Public Cloud
Public cloud is a deployment model where the cloud service provider owns and controls all servers, networking, and hardware. The cloud services are available to all users under the pay-as-you-go model. Public cloud services ensure scalability, reliability, and resilience, and eliminate some of the work to reduce costs and cut down on cost upfront.
Some advantages of public cloud deployment include:
- High availability
● Private Cloud
Private cloud is a deployment model that is managed and used by the company. It is a cloud infrastructure that is dedicated to a single organization and is not shared with other organizations. Private cloud is highly customizable and provides complete control over the resources.
Some advantages of private cloud deployment include:
- High performance
● Hybrid Cloud
Hybrid cloud is a cloud-based deployment method that is managed by the provider of the service and partially by the business. Hybrid cloud combines the benefits of public and private clouds to create a more flexible and cost-effective solution. Hybrid cloud allows businesses to use public cloud resources for non-sensitive data and private cloud resources for sensitive data.
Some advantages of hybrid cloud deployment include:
● Community Cloud
Community cloud is a deployment model where a resource is shared between many organizations, typically within the same industry. Community cloud is a cost-effective solution for businesses that require a high level of security and compliance. Community cloud is highly customizable and provides complete control over the resources.
Some advantages of community cloud deployment include:
- High security
In conclusion, choosing the right cloud deployment model is critical for businesses that want to take advantage of the benefits of cloud computing. Each cloud deployment model has its own advantages and disadvantages, and businesses must carefully evaluate their needs to choose the right model for their organization.
Public Cloud Deployment Model
Characteristics of Public Cloud
Public cloud deployment model refers to the cloud computing infrastructure and services that are available to the public over the internet. The public cloud is designed to be shared by all users, and it is available on a pay-per-user service basis. The cloud provider is responsible for the creation and maintenance of the cloud instances. The services available in public clouds vary from Infrastructure as a Service (IaaS) to Software as a Service (SaaS). Examples of public cloud providers include Google Cloud Platform, Microsoft Azure Cloud, and Amazon Web Services.
The following are the main features of the public cloud:
- Public cloud has uniformly designed infrastructure which makes it infrastructure with lower complexity and failures.
- The company which provides public cloud services normally operates on a pay-per-use basis.
- The global public cloud market size was valued at USD 211.5 billion in 2019 and is expected to grow at a compound annual growth rate (CAGR) of 14.6% from 2020 to 2027.
- Public clouds offer security measures, but the customer is responsible for ensuring the security of their data and app security.
Benefits of Public Cloud Deployment Model
The public cloud deployment model offers numerous benefits, including:
- Accessible 24/7 and from anywhere with a robust permission and authentication system.
- There is no limitation on the number of users.
- Cloud service providers completely cover the entire infrastructure, so you don’t have to install any hardware.
- It is not going to cost you any fees for maintenance because the service provider handles it.
Disadvantages of Public Cloud Deployments
The public cloud deployment model also has its disadvantages, including:
- The privacy and autonomy of the organization cannot be achieved.
- Users have limited control over underlying infrastructure.
- Users and service providers may experience security concerns due to shared infrastructure.
- Public cloud has a high level of dependency on stable internet connection.
- It offers very limited customization options to users.
- Many times public cloud service providers face bottlenecks due to compliance issues with regulatory requirements.
- Public cloud services can become more expensive in the long run.
- It offers very limited data migration options to its users which sometimes becomes a bigger challenge to deal with.
- Vendor lock-in occurs in the public cloud as and when a user is forced to continue using a product or service because switching to another vendor is not practical.
In conclusion, the public cloud deployment model provides a convenient and cost-effective way to deploy and access cloud resources. However, it also has its limitations, and users should carefully consider their needs and requirements before opting for this model.
Private Cloud Model
Private cloud deployment is a cloud computing model that is exclusive to a single organization. It can be hosted externally or on-premises, and it is protected by a firewall, which ensures that no other organizations can access the cloud infrastructure. Private clouds are ideal for organizations where industry regulations are very strict. Employees within the organization can access the cloud privately at any time and from any location with internet connectivity. Although private cloud services are more expensive than public cloud services, they offer greater security and flexibility.
Characteristics of A Private Cloud
Here are the key features of a private cloud deployment:
- It can be designed to meet specific compliance requirements.
- Increased security which leaves very minimal chances of leaks of information.
- Customizable to meet specific needs.
- Weak SLA, however, you are able to implement your own policies.
Benefits of Choosing Private Cloud Deployments
Here are the advantages of using the private cloud deployment model:
- You control the entire process of the integration of services IT operations, IT policies and user behaviour.
- Businesses can tailor their solutions in accordance with market needs.
- It is a reliable product that provides outstanding performance.
- Private cloud is compatible with older systems that can’t connect to the public cloud.
- It is ideal for storing company information that only authorized employees have access to. You can integrate as many security solutions as feasible to safeguard your cloud.
Disadvantages of Private Cloud Deployments
Here are the disadvantages of using the private cloud deployment model:
- It is a hosted on-premises cloud that needs a substantial amount of capital investment to acquire and maintain the required hardware.
- It is more expensive to set up and maintain.
- Private clouds offer limited scalability compared to public clouds.
- It has high dependency on internal IT resources to manage and maintain.
- Scalability is dependent on the choice of the hardware.
Private cloud deployments have several benefits, including increased security, customization, and control over the integration of services. However, they also have several disadvantages, such as high capital investment, limited scalability, and high dependency on internal IT resources. Overall, private cloud deployments are ideal for organizations where industry regulations are very strict and require greater security and flexibility.