Cloud computing spans a range of classifications, types and architecture models. The transformative networked computing model can be categorized into three major types: Public Cloud, Private Cloud and Hybrid Cloud.
Hybrid IT has rapidly proven that it offers the flexibility for delivering new software applications and enhanced features quickly critical agility in the age of digital business. With that in mind, enterprises now need to identify the best distribution of services and applications and their strategy for connecting to the clouds they use.
This article explores the key differences between the classifications of Public, and Private cloud environments.
Public Cloud refers to the cloud computing model with which the IT services are delivered across the Internet. The computing functionality may range from common services such as email, apps and storage to the enterprise-grade OS platform or infrastructure environments used for software development and testing. The cloud vendor is responsible for developing, managing and maintaining the pool of computing resources shared between multiple tenants from across the network.
The advantages of Public Cloud solutions for business customers include:
- No investments required to deploy and maintain the IT infrastructure;
- High scalability and flexibility to meet unpredictable workload demands (control over resources);
- Reduced complexity and requirements on IT expertise as the cloud vendor is responsible to manage the infrastructure;
- Flexible pricing options based on different SLA offerings;
- The cost agility allows organizations to follow lean growth strategies and focus their investments on innovation projects.
However, there are disadvantages as well, including:
- The total cost of ownership (TCO) can rise exponentially for large-scale usage, specifically for midsize to large enterprises;
- Not the most viable solution for security and availability sensitive mission-critical IT workloads;
- Low visibility and control into the infrastructure, which may not suffice to meet regulatory compliance;
- Inability to meet industry specific compliance demands.
Private Cloud refers to the cloud solution dedicated for use by a single organization. The data center resources may be located on-premise or operated by a third-party vendor off-site. The computing resources are isolated and delivered via a secure private network, and not shared with other customers. Private cloud is customizable to meet the unique business and security needs of the organization. Private Cloud solutions provides greater visibility and control into the infrastructure, organizations can operate compliance-sensitive IT workloads without compromising on the security and performance previously only achieved with dedicated on-premise data centers.
The advantages of private cloud for business organizations include:
- Dedicated and secure environments that cannot be accessed by other organizations;
- Compliance to stringent regulations as organizations can run protocols, configurations and measures to customize security based on unique workload requirements;
- High scalability and efficiency to meet unpredictable demands without compromising on security and performance;
- High SLA performance and efficiency;
- Flexibility to transform the infrastructure based on ever-changing business and IT needs of the organization;
- Excellent security.
The tradeoff with Private Clouds? Disadvantages include:
- Expensive solution with a relatively high total cost of ownership as compared to public cloud alternatives for short-term use cases;
- Mobile users may have limited access to the private cloud considering the high security measures in place;
- The infrastructure may not offer high scalability to meet unpredictable demands if the cloud data center is limited to on-premise computing resources.
Of course, cost is a cornerstone for any business decision. The economies of scale inherent with a public cloud service can seem very attractive. But keep in mind that private clouds can be less expensive, especially for companies that operate high-volumes of transactions or need 24×7 application availability.
Along with the high-level pros and cons, it’s essential to weigh the types of software and services that your business uses. Where applications belong depends on your industry, the degree of security risk you are comfortable with and the server utilization.
Colocation Connecting the best of Both Worlds
Colocation is the scalable, high-performance point of connection between traditional IT and cloud platforms. Colocation offers an environment in which an enterprise can link its core infrastructure to a mix of private and public clouds within the same facility. Simplifying the network has its obvious administration advantages, which are complemented by eliminating costs associated with using multiple network connections. This model also improves the performance and security when connecting to those cloud providers.
Read more about the range of secure, super-fast connections between cabinets, networks and cloud services offered by Datacenter.com.