What is the cloud?
The term “cloud” is currently so commonly used that it is worth asking what it really means and how is it possible that it occurs nearly in every context. To start with, we will make a simple division of models of cloud services. Three main types can be identified: SaaS, PaaS and IaaS.
Software as a Service allows end users to use software – you simply purchase access to a given application functionality (a typical example is Office 365, and in the case of SAP solutions – a product family functioning under the name of Success Factors). Platform as a Service allows management of applications and creation of software. In other words, we get access to a site with technology and guaranteed technical conditions, such as memory, bandwidth, a number of accounts, etc. Infrastructure as a Service ensures access to hardware resources, such as adequately capacious drives, sufficient memory, etc.
Thanks to the cloud, access to services is accomplished online, and therefore it is possible to work from practically any location on Earth. The consequence of using this class of solutions is a decrease in costs of IT equipment, as well as lack of maintenance, ...