Cloud

 

Zasebni, javni ter hibridni oblakThere are three types of cloud computing:
• Infrastructure as a Service (IaaS),
• Platform as a Service (PaaS), and
• Software as a Service (SaaS).

Using Infrastructure as a Service, users rent use of servers (as many as needed during the rental period) provided by one or more cloud providers. Using Platform as a Service, users rent use of servers and the system software to use in them. Using Software as a Service, users also rent application software and databases. The cloud providers manage the infrastructure and platforms on which the applications run.

End users access cloud-based applications through a web browser or a light-weight desktop or mobile app while the business software and user’s data are stored on servers at a remote location. Proponents claim that cloud computing allows enterprises to get their applications up and running faster, with improved manageability and less maintenance, and enables IT to more rapidly adjust resources to meet fluctuating and unpredictable business demand.

An overused word today, cloud is all about choice – giving you the freedom to choose how you run and pay for IT. Cloud encompasses many solutions and scenarios including private clouds, public clouds and hybrid clouds, and Pronid can help you determine your cloud strategy, help you migrate to it, and manage and support it.

Private cloud

Private cloudA private cloud solution could involve a business operating infrastructure such as servers (virtual or physical) that are not owned or managed by them, but also not accessible by any other organisation. Alternatively private cloud solutions can involve the customer purchasing and managing their own environment but doing so with scalability and flexibility, so that server load can increase or decrease to support fluctuations in workloads processing requirements.

Public cloud

Public cloudA cloud strategy for one organisation may see the business move certain services or applications off site to be delivered and managed completely by a third party, such as e-mail or e-mail filtering. In this case the business may decide that it doesn’t want to spend the money or the time implementing and managing these environments, and instead opts to pay a per user fee. This scenario is generally classified as a public cloud solution and means that the organisation does not have to worry about the hardware or the software required to deliver the service.

Hybrid

Hybrid solutions leverage a combination of on-premise, private and/or public cloud infrastructures. For example during normal operations services are delivered from the private infrastructure, however during peak load times storage or compute resources may be delivered using public infrastructure which can be accessed (and paid for) only as needed.