There are different service models for the cloud, which are aimed at different target groups:
Software as a Service (SaaS):
SaaS solutions enable users to use software residing on the service provider’s servers. The program normally runs in a web browser.
Platform as a Service (PaaS):
PaaS applications are primarily intended for IT developers. In this model, the cloud offers a programming or runtime environment on which the user’s own software applications are developed and run.
Infrastructure as a Service (IaaS):
Infrastructure as a Service represents the origin of cloud computing services. IT departments or providers of other cloud services are given access to server environments, computing power and storage space to develop and run their own software.
Everything as a Service (XaaS):
Everything as a Service (also called Anything as a Service) comprises a combination of all of the cloud services described above. It is a cloud technology approach, which as a collective term incorporates all cloud computing services under one roof.
There are different deployment models in the cloud. They depend on who is providing the services and the target group they are directed at.
The public cloud is a publicly and freely accessible service in which customer data is jointly processed on the provider’s servers. Examples of the public cloud include webmail services and SaaS applications such as Google Docs and Salesforce.
The community cloud is a special model for joint projects from several companies. The employees of these companies can all access the corresponding services, but they are not publicly available.
In private cloud services, resources like computing power, storage and network capacity are not shared with other users. These are mostly in-house IT services that individual employees can access and benefit from the added value typical of the cloud.
A virtual private cloud is a secure, isolated private cloud hosted within a public cloud. In this model, a public cloud provider handles the hosting of private cloud services.
Hybrid clouds are a combination of public and private clouds. Many companies use public cloud services for applications that are not subject to data protection regulations and run privacy-critical and data-sensitive applications in a private cloud service in-house. In such an operation, it is especially important to make an exact demarcation.
The term business cloud distinguishes cloud services aimed at companies from those that are also or primarily aimed at private individuals.
of the cloud?
Cloud services can dynamically adjust to the needs of the customer, both upwards and downwards.
The scalability of services goes hand in hand with increased cost efficiency. After all, with cloud solutions companies only pay for the resources they really need. In addition, high capital expenses for hardware are eliminated.
Data from cloud IT services is reliably available at all times. All maintenance is managed by the cloud provider and new features and functions can be used immediately.
As a general rule, cloud providers have professional IT security management. Their datacenters are protected with multiple redundancy, and so is customer data.
A cloud solution gives companies maximum flexibility. First, they can outsource many risks relating to security and technology to the cloud provider, and second, the services used can be adjusted at any time to meet their own needs or changed user behavior.
Since IT resources are operated and maintained by the cloud provider, no resources need to be provided in-house.
In the cloud, employees from different locations can access the same resources and collaborate with one another.
Many administrative tasks are outsourced to the cloud provider enabling the company to focus fully on its own core business.