A Cloud is known for offering operational flexibility. That is why organisations today want to move their existing infrastructure to the cloud. Gartner estimated that the global public cloud market is expected to reach over 246.8$ billion, and about 74% of tech CFOs agree that cloud computing delivers a major impact.
IT departments at most enterprises manage applications across multiple environments in a complex IT architecture. They need to reevaluate their cloud infrastructure to meet new business goals and look for cost-effective ways to migrate to the cloud.
Enterprises should determine the hosting solution that suits their application environment—private cloud, public cloud, or hybrid cloud. In this article, we will outline basic considerations and comparisons, as well as best practices to assess which cloud service suits the best for your complex deployments integration.
Public vs Private vs Hybrid Cloud Services: A Glimpse
1. Public Cloud
Public clouds are installed with a low cost of ownership and reduce the organisation’s upfront costs, ongoing IT labour costs, and tax liability. This model is suited for the public, SMEs, or large enterprises. A remote location provisions the infrastructure at the cloud data centre. Enterprises can choose whether they want to manage their public cloud infrastructure or outsource to a managed cloud service provider.
Public clouds offer automated deployments and greater reliability and are suitable for these application centers:
- Data storage
- Mission-critical, seasonal, or latency-intolerant web tiers
- Testing environments
- Data archival
- Application hosting
- Microsite on-demand hosting.
- Automatic scaling of larger applications.
- A particular computing need
- Applications for IT and business processes
- No investment for infrastructure deployment and maintenance
- Flexible pricing based on SLA agreements
- High scalability for unpredictable workloads.
- Cost agility for following growth strategies
- No cost control
- Least security
2. Private Cloud
A private cloud is used by a single organisation and is a preferable option if some legacy applications are inoperable in the public cloud. A private cloud solution is in the on-premise datacenter or a third party data center with a virtualisation layer. The cloud is owned and operated by the organisation or a third-party vendor. The private cloud offers the greatest control and security, but its maintenance can be expensive for small or mid-sized organisations.
Private cloud is best suited for an organisation where:
- Application clusters are used and need dedicated infrastructure for compliance.
- High performance is needed to access a large file system.
- The application has predictable usage patterns and low storage costs.
- An application is unstable but gets lots of traffic.
- The engineering team is not equipped for migrating the application.
- Security, latency, adaptability, regulatory, flexibility, and privacy is demanded.
- The next-generation cloud data centre is installed.
- Secured environments which other organisations cannot access.
- High SLA performance.
- Regulations compliance for running organisation protocols.
- Flexibility for any change in the infrastructure and business needs.
- Expensive with a high ownership cost.
- Limited access for mobile users.
- Scalability issues to meet unforeseen demands with an on-premise cloud data centre.
3. Hybrid Cloud
The hybrid cloud is a combination of public and private clouds and uses at least one private and public cloud. The private cloud can be on-premise or virtually located outside the organisation. The organisation has to handle several security platforms and ensure seamless communication between the cloud properties.
In a hybrid cloud, the public and private cloud support a single application. Often, enterprise architecture is so complex that a hybrid cloud is the best solution.
A hybrid cloud is suitable for:
- Big organisations where the mission-critical data is hosted on the private cloud, and application development and testing in the public cloud.
- Organisations serving business niches facing IT security performance requirements
- Organisations serving vertical markets hosted in the public cloud while data is stored in the private cloud.
- Secured private networks SaaS offerings that improve existing cloud solutions security
- Scalability of the public cloud without unveiling sensitive workloads reducing security risks.
- Policy-oriented deployment to administer workloads based on security, performance, and costs.
- Services across data centres ensure maximum reliability.
- Improved security and reduced costs
- Multiple cloud infrastructures at different locations require compatibility and integration. This is a drawback with public cloud deployment, as the organisations cannot control the infrastructure.
- Expensive due to switching between public and private clouds
- Additional infrastructure increases complexity.
Private, Public, and Hybrid Cloud Comparison Points
Here are some of the major comparison points between the three cloud models to help you make a better choice:
End Note: Which Cloud Services Should You Choose?
A variety of factors are taken into consideration while choosing between public, private, and hybrid cloud solutions. Trusted cloud Vendors such as E2E Cloud are known to offer flexibility and agility to your organisation provided that the organisation maintains cloud security, user access and disaster recovery. E2E offers cloud services in public, private and hybrid models. You need to develop a robust cloud strategy based on the workload needed to improvise the organisation’s agility by making optimal IT resource usage.