Cloud Computing is a huge number of physical servers that are divided (virtualized) and then distributed as services or resources to customers via the Internet.
There are a number of companies that sell access to servers or server services via the Internet, like the technology industry.
It is a handful of suppliers account for the lion’s share (and the largest range of services), while there are an almost infinitely large number of smaller and often highly specialized suppliers.
Among the former we may name Amazon & Microsoft. The companies like IBM and Google can be found with wide range of IT related services like SAP and ORACLE and many others.
In the IT industry, “Cloud Computing” is most often categorized into three main categories: IaaS, PaaS and SaaS. Let us briefly explain what these abbreviations cover.
In IaaS is mainly people purchase of server capacity, storage, backup, etc. The engine room has been moved out, and the customer has full control over everything and thus also responsibility for setting up and managing the servers’ configuration, backup, etc. ex- Microsoft Azure and Amazon Web Services
In IaaS You don’t need to purchase physical servers or physical network infrastructure. Though you can expand the server capacity and turn it off without effecting physical servers.
PaaS mainly consists of various “tools” and “services” that the customer can build their own solution as blocks. And the customer has control over full control over it.
Here the supplier will provide a programming interface as well as document management, application and database service, on which you can then build your own ESDH without setting up servers and / or configuring web and database servers.
Though PaaS is not that popular so companies like Microsoft is investing heavily in software development for future use.
In(SaaS) The customer has self-control over configuration though limitedly. Services like SalesForce, Microsoft Office 365 and Citrix ShareFile where the supplier makes a specific ESDH system available, are SaaS products.
The customer experience less flexibility as they can add users, build business rules and upload documents / content with fewer “moving parts” to keep track of.
As far as the legislation Cloud Computing is at least as important to get a handle on responsibility, uptime, backup – what you can collectively call “Governance”. Remember that “going in the cloud” is very much about sharing the responsibility for IT-related tasks between several parties, one of which (the supplier) often has a rather square attitude on their part.
Most importantly “cloud computing ” is not about moving all IT systems rather it is about opportunities to take advantage of a number of solutions, which are usually reserved for very large, international companies. It’s a solution for sharing documents so that a number of your systems can continue to run in your own engine room.