Gartner suggests that public cloud revenue alone will cross the $200bn p.a. line in 2019. This growth is driven by the operational benefits, scalability and cost efficiency that has made cloud computing so universally attractive.
CTOs must consider the flexible ways in which technology-as-a-service can be deployed, to ensure even the most unique enterprise infrastructure technology requirements are successfully provisioned in the cloud. Cloud provisioning can be divided into three levels:
Each service model entails a trade-off. IaaS offers broad control over technology provisioning but requires expertise and management overhead. In contrast, a SaaS solution requires little technical intervention, but users lose ultimate control over the application.
This trade-off implies flexibility in that an enterprise can choose to host mission-critical or regulated applications with an IaaS vendor while transferring everyday applications across to cheaper SaaS platforms.
Cloud infrastructure can be deployed in different modes with each offer flexibility similar to the choices in cloud service models. First, public cloud infrastructure is entirely controlled by a third party. Hardware and software are pooled and clients rent a share of this pool. Costs are low, but a loss of control is implied that many enterprises find hard to tolerate.
In contrast, private cloud deployments are exclusively for the use of one organisation. Note that public clouds can be owned by an enterprise itself or owned and provided by a third party. Broadly speaking private clouds offer more control and more opportunity for customisation.
Just as with cloud service models, enterprises can opt for a mix of public and private clouds, choosing to host some applications in the public cloud and others in the private cloud. This would be a hybrid cloud deployment.
With a range of cloud models and deployment options available organisations can easily take advantage of the benefits that cloud computing brings. To name just a few:
Aside from offering cheaper, more flexible computing, cloud infrastructure also opens up possibilities that are difficult for traditional on-premise infrastructure to match.
Besides, cutting-edge tech such as IoT is simply a natural fit for cloud computing because of the geographic reach and interconnectivity that enterprise infrastructure in the cloud achieves. But how do enterprises make the shift to cloud infrastructure?
However much of its technology requirements an enterprise decides to move to the cloud, there are essentially four steps to a successful migration.
Throughout the migration process, an enterprise should remain cognizant of legacy applications. Older, on-premise applications can have unique requirements and can lack the ability to connect with other cloud apps. As a result, special care needs to be taken with legacy apps to avoid migration hurdles.
Yes, migrating enterprise workloads to the cloud is challenging, particularly where legacy applications and regulatory restrictions are in place. Cloud computing is uniquely malleable, and determined enterprises can tap just as much value out of cloud infrastructure as anyone else.
Unsure of where to start? Contact ELEKS for end-to-end cloud migration service.
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