Public cloud refers to a type of cloud computing service where computing resources such as servers, storage, and applications are made available to the general public over the internet. These resources are provided by a third-party cloud service provider and are accessed by users over the internet.
Public cloud services are typically offered on a pay-as-you-go basis, which means that users only pay for the resources they consume. This model is highly scalable, flexible, and cost-effective, making it popular among individuals and organizations of all sizes.
Examples of public cloud providers include Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP). These providers offer a wide range of services, such as virtual machines, storage, databases, and more, that can be used to build and deploy applications and services in the cloud.
Public Cloud vs On-Prem:
Public cloud and on-premises (or on-prem) infrastructure are two different approaches to computing infrastructure. Public cloud refers to computing resources that are made available to users over the internet by a third-party provider, while on-prem refers to infrastructure that is owned and managed by an organization and located within their own physical premises.
There are advantages and disadvantages to both approaches:
- Scalability: Cloud providers offer a variety of computing resources, such as virtual machines, storage, and databases, that can be scaled up or down as needed.
- Cost: Public cloud eliminates the need for organizations to invest in their own hardware and infrastructure, which can be expensive.
- Accessibility: Public cloud resources are accessible from anywhere with an internet connection.
- Security: Public cloud resources are shared with other users, which can make them vulnerable to security breaches.
- Dependence on third-party providers: Organizations that rely on public cloud infrastructure are dependent on the performance and reliability of the cloud provider.
- Cost: While public cloud can be cost-effective, it can also be expensive if organizations require high levels of computing resources.
- Control: Organizations have complete control over their own infrastructure and can customize it to their specific needs.
- Security: On-prem infrastructure is located within an organization’s own premises, which can offer greater security and control over sensitive data.
- Cost: While on-prem infrastructure requires an upfront investment, it can be more cost-effective in the long run for organizations with consistent computing needs.
- Scalability: On-prem infrastructure can be difficult to scale up or down as needed.
- Maintenance: Organizations are responsible for maintaining their own infrastructure, which can be time-consuming and require specialized expertise.
- Accessibility: On-prem infrastructure can only be accessed from within an organization’s own premises, which can limit accessibility for remote workers or other stakeholders.
Ultimately, the choice between public cloud and on-prem infrastructure depends on an organization’s specific needs, priorities, and resources.
Why we don’t have to migrate all assets to public cloud?
There are several reasons why an organization may choose not to migrate all assets to the public cloud:
- Cost: Depending on the size and complexity of an organization, it may not be cost-effective to migrate all assets to the public cloud. Some workloads may require specialized hardware or software that is more expensive to run in the cloud than on-premises.
- Security: Some organizations may have regulatory or compliance requirements that prevent them from moving certain data or applications to the public cloud. Additionally, some organizations may have concerns about data security in the cloud and may prefer to keep certain assets on-premises.
- Performance: Certain workloads, such as those that require low latency or high throughput, may perform better on-premises than in the public cloud. In these cases, it may make more sense to keep the workload on-premises rather than migrating it to the cloud.
- Operational Complexity: Moving all assets to the cloud can introduce additional operational complexity, especially if an organization has already invested heavily in on-premises infrastructure and tools. In some cases, it may be more practical to keep certain assets on-premises to simplify management and maintenance.
Overall, the decision to migrate assets to the public cloud should be based on a careful evaluation of the costs, benefits, and risks associated with the migration. Not all assets may be suitable for the cloud, and organizations should carefully consider the trade-offs before deciding to migrate.