Exploring Delivery and Service Models During a Cloud Transition
The cloud offers a new way of delivering IT services that provides greater efficiency and flexibility than traditional approaches. But as any company that’s made a transition to the cloud already knows, there’s no one-size-fits-all approach. Instead, organizations must explore the different delivery and service models to determine the best fit for their needs.
Exploring Service Models
The National Institute of Standards and Technology (NIST) notes that cloud computing and the delivery of service models includes five essential characteristics: on-demand self-service, broad network access, resource pooling, rapid elasticity and measured service. According to NIST, possible service models for the cloud include:
- Software-as-a-service allows consumers to use cloud-based applications over the internet, generally on a subscription-based model
- Platform-as-a-service provides users with a platform to deploy applications decoupled from the underlying infrastructure
- Infrastructure-as-a-service delivers computing infrastructure to subscribers via a cloud-based model
Choosing the Delivery Model
Cloud computing is also categorized according to how services are delivered. There are three primary cloud delivery models:
- Public cloud: Services are delivered via infrastructure owned and housed by the service provider.
- Private cloud: Services and the underlying infrastructure remain on a private network owned by the customer, but the data center architecture is provided by the service provider.
- Hybrid cloud: Combines the previous two delivery models, with some data and applications hosted in the public cloud and others— generally, those that require a higher level of security or management — housed in a private cloud environment.
According to recent research by Clutch, the private cloud is currently the most popular delivery model, used by 68 percent of respondents, followed by hybrid cloud at 47 percent and public cloud at 37 percent. But while 82 percent of respondents are exploring hybrid cloud options, almost all cloud users will transition to the public cloud delivery model eventually, the study suggests.
Clutch also found that 57 percent of respondents had hired an external organization to help them develop their cloud strategy and determine which delivery and service model options are best for each workload. Cloud infrastructure services from an external party can equip organizations to secure sensitive data and adhere to regulatory compliance during a cloud transition.