What is Cloud Computing?

When it comes to Cloud Computing, it involves the dynamic provision of applications and data over the internet. This also includes the corresponding IT resources that are maintained on the provider's server. Typically, usage is billed on a pay-per-use subscription basis, depending on the service provider or data centre of the service provider. The big four - Amazon, Microsoft, Google, and Web Services - are also the leading providers in the field of Cloud Computing, where data can be securely stored. But how does Cloud Computing actually work?

Definition of Cloud Computing

When software or other IT services are provided in a cloud on a network of interconnected servers, then it is referred to as Computing. Accordingly, applications or infrastructures no longer need to be installed locally to achieve optimal availability. The entire use of the servers runs over an internet connection, allowing access to the data from any internet-enabled device.

Various Service Models in Computing

With the help of a Cloud, services such as software applications, general infrastructures, and platforms can be provided. Three service models form the basis of computing. This includes IaaS (Infrastructure as a Service), where virtual hardware resources like storage space are made accessible. In the case of SaaS (Software as a Service), the user is provided with online software that does not need to be installed. PaaS, on the other hand, provides a programming environment in which users can develop their own applications with customizable features. However, all three models have one thing in common: they are exclusively provided in a cloud and require an internet connection to be used.

Cloud Models in Computing

In addition to the common service models, there are also four deployment models.

• Private Cloud
• Public Cloud
• Hybrid Cloud
• Community Cloud

Over time, various hybrid forms have also emerged in the world of clouds. These include, for example, the "Virtual Private Cloud," which represents a private cloud on a publicly accessible Cloud Hosting infrastructure, and the "Multi-Cloud," where various computing services are consolidated on Cloud Servers. For further variations, it seems that there are no limits blocking the path of Cloud Computing.

What operational forms are offered in the data centre for Cloud Computing?

Basically, there are four different operating models for managing data and software in the cloud. First, there is the "Private Cloud," which is operated for a single user. The management and data centre with servers can be located either in-house or outsourced. In contrast, a "Public Cloud" is available to a larger group of users who share the same interests. The costs are shared among all server users. A "Community Cloud," on the other hand, is also shared by multiple users with similar interests. Lastly, there is the "Hybrid Cloud" to mention. This cloud connects multiple cloud infrastructures on the server, allowing data and programs to be exchanged within the network based on availability.

Outsourcing of Servers, Networks, and Data

Users working with cloud services can run programs completely over the internet and process and store data from the network through outsourcing and migration to the cloud. Installing the respective software or application on the local server or personal computer has generally become unnecessary. The availability and use of services are regulated through protocols, technical interfaces, or a web browser. Data is processed and provided in a data centre in a cloud. This offers numerous advantages, especially for businesses. Required capacities can be dynamically provisioned based on demand and availability, and can be scaled as needed. In these cases, billing is usually based on a "pay per use" model, where only the capacities actually used are charged. In most cases, rigid licensing terms and long-term commitments are also eliminated.

Key Benefits of Cloud Computing

Basically, cloud computing offers a clear advantage simply by giving users the ability to access servers, data storage, databases, and applications over the internet. For various application possibilities, corresponding CSPs (Cloud Service Providers) provide the necessary technical resources. The required hardware is directly connected to users' networks. The necessary availability of resources is ensured through special web applications.

In addition, the following benefits can arise for the user:

Conclusion on Cloud Computing

Especially for small businesses, cloud computing presents a successful alternative to reduce costs while still being able to utilize all imaginable IT resources and process data securely.

• Users can always utilise capacities that are demand-driven, case-specific, and necessary. Requirements can be adjusted to all current circumstances and needs at short notice.
• Users can benefit from the scale of providers, as higher usage rates ultimately lead to lower prices. Pricing is usually based on a "pay-per-use model", where billing is usage-dependent.
• Investment costs for a dedicated data centre or server are eliminated.
• Data transfer and the use of IT resources become faster and more agile. All applications are available promptly. Costs and efforts for development and research are significantly reduced.
• The global reach of companies can be increased rapidly, as corresponding applications can be accessed worldwide.
• There are no costs for own servers, maintenance of data centres and technical equipment, general data processing, and similar.

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