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Cloud Computing
Cloud computing is a general term for anything that involves delivering hosted services over the Internet.
Cloud computing offers several advantages by allowing you to use services that include infrastructure, applications, and/or storage space for a nominal fee.
Presilient can consult with you on the best cloud model for your organisation and manage it for you.
These services are broadly divided into three categories known as the Cloud Computing Stack: Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS) and Software-as-a-Service (SaaS).The cloud service/s is sold on demand, typically by the minute or the hour; it is elastic – a user can have as much or as little of a service as they want at any given time; and the service is fully managed by Presilient.
Get a consultationCloud Computing Stack
Infrastructure as a service-IaaS
Physical or more often as virtual machines – raw (block) storage, firewalls, load balancers, and networks. IaaS is whereby Presilient provides the resources on demand from their large pools installed in data centers. Local area networks including IP addresses are part of the offer. For wide area connectivity, the Internet can be used or – in carrier clouds – dedicated virtual private networks can be configured.
Platform as a service-PaaS
In the PaaS model is a platform typically including operating system, programming language execution environment, database, and web server. Application developers can develop and run their software solutions on a cloud platform without the cost and complexity of buying and managing the underlying hardware and software layers. With some PaaS offers, the underlying compute and storage resources scale automatically to match application demand such that cloud user does not have to allocate resources manually.
Software as a service-SaaS
In this model we install and operate application software in the cloud and cloud users access the software from cloud clients. The cloud users do not manage the cloud infrastructure and platform on which the application is running. This eliminates the need to install and run the application on the cloud user’s own computers simplifying maintenance and support. What makes a cloud application different from other applications is its elasticity. This can be achieved by cloning tasks onto multiple virtual machines at run-time to meet the changing work demand.