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Cloud computing

Cloud computing services provide information technology (IT) as a service over the Internet or a dedicated network, with on-demand delivery and pay-as-you-go. Cloud computing services range from development platforms and complete applications to servers, storage and virtual desktops.

Who uses cloud computing services, and why?

Government agencies and corporations use cloud computing services to meet different infrastructure needs and applications such as CRM, databases, computing and data storage. Unlike a traditional IT environment where software and hardware are paid directly by the department and deployed over a period of months, cloud computing services provide IT resources in minutes or hours and align costs With actual use. As a result, organizations are more agile and can manage expenses more effectively. Consumers also use cloud computing services to simplify application usage, store, share and protect content, and allow access from any device connected to the Internet.

How do cloud computing services work?

Cloud computing services have several common attributes:
Virtualization: Cloud computing uses server virtualization and storage to broadly allocate / reassign resources quickly.
Multiuser: resources are grouped and shared among multiple users for economies of scale.
Network access: access to resources through a web browser or a thin client with different network devices (computer, tablet or smartphone).
On demand: resources are self-provisioned from an online catalog of predefined configurations.
Elasticity: automatic ascending and descending scaling is possible.
Measurement / charges: the use of resources is recorded and invoiced according to the organization of the services.
Among the various types of cloud computing services provided internally or by third-party service providers, the most common are:
Software as a Service (SaaS): The software runs on computers owned and managed by the SaaS provider, rather than being installed and managed on users' computers. Access to the software is obtained through the public Internet and is usually offered with monthly or annual subscription.
Infrastructure as a Service (IaaS): The IaaS provider provides computation, storage, networks and other elements (security, tools, etc.) via the public Internet, VPN or a dedicated network connection. Users own the operating systems, applications and information that runs on the infrastructure; Administered and paid for use.
Platform as a Service (PaaS): PaaS provider provides all the software and hardware required to create and run cloud-based applications over the public Internet, VPN, or a dedicated network connection. Users pay for the use of the platform and control the way in which the applications are used throughout its life cycle.

Benefits of cloud computing services:

Cloud computing services offer numerous benefits, including:

Higher implementation speed and shorter response time that generates value
Access to applications and content from anywhere
Fast scalability to meet demand
Increased use of infrastructure investments
Lower infrastructure, energy and facility costs
Increased productivity of IT staff and the entire organization
Better security and greater protection of information assets

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