What is a cloud? What is cloud computing?

The terms cloud and cloud computing are used very often, but what is actually behind it? In this article we explain the different terms in an understandable way.

The term cloud has established itself as a short form of cloud computing .

Briefly summarized: The term cloud means the interaction of several servers. The servers take on tasks such as data storage or complicated program sequences. The cloud user does not notice how many servers are behind the cloud.

Even if one server fails, it has no impact on the entire system. This independence from the individual servers is therefore referred to as cloud, since the user does not have to have an overview of the individual units (cloudy / unclear for the user). The cloud is the big picture of these computing units.

Cloud / cloud does not mean that your data is only transmitted via “clouds” or satellites. Everything essentially takes place on Earth and your “normal” internet connection via radio towers, routers, cables and data centers is used.

Business Cloud: This term is used by this website to identify offers that are aimed at companies.

Cloud computing: see above, means the interaction of several servers that take on tasks as a whole and can provide storage space, for example.

Community Cloud: means the cloud as a (local) community project. A user group gets together and shares the costs for the project. For example, a community cloud from several universities or colleges is conceivable.

Hybrid cloud: A combination of the private cloud and public cloud, depending on individual needs.

Infrastructure as a Service (IaaS): In contrast to PaaS and SaaS, IaaS takes effect at the lowest level, the hardware compilation. This cloud service provides you with servers that you yourself divide into your own virtual computer clusters , i.e. computer networks. You are responsible for the selection of any software.

Multi Cloud: Based on the idea of the hybrid cloud, several cloud offers are linked and bundled here.

Network Attached Storage (NAS): Any cloud software offers more than just storage and therefore goes beyond a NAS. However, if, for example, your own hard drive is made available via the router in the network, this is referred to as NAS storage space that is available via the network.

NIST (National Institute of Standards and Technology, USA): The US institute developed a definition of the cloud . More details can be found in the next section on this page.

Platform as a Service (PaaS):PaaS acts between IaaS and SaaS on the 2nd level. You will have access to a completely set up software environment in which you can also run your own software, for example.

Private cloud: own computer structure or own cloud. This can be an in-house cloud or the small cloud server in your living room.

Public cloud:IT infrastructures or a cloud that is publicly accessible. On our site, we also refer to providers as so-called cloud hosters.

Software as a Service (SaaS): is also referred to as software on demand. You can use selected software that runs on the servers in the cloud. You have only limited influence over the software. Some web applications, such as an online office offering, can already be referred to as SaaS.

Virtual private cloud: A public cloud is accessed via a local (virtual) environment. The protection is usually done by a VPN.

submitted by /u/farabijfa
[link] [comments]