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Skype is an application that mainly allows Internet telephony through VoIP (Voice over IP). The app also allows the sending of messages, images and files in different formats. The program is enabled for free for various devices such as computers, smartphones or tablets. Skype It is a subsidiary of Microsoft since 2011.

General information

The app Skype was founded in Luxembourg in 2003 by Niklas Zennström and Janus Friis. Building on the experiences that the two founders gained with other developers on the Kazaa file-sharing platform, they set up Skype as a peer-to-peer network.

During a session, there is a direct connection between the communication participants and only the resources of the respective devices are used. In this way, Skype saves infrastructure costs. The concept of distributed computer systems also has an impact on users, since video conferences, messages and files do not have to be transmitted to a server, as is the case, for example, with Google Hangouts.

Skype was acquired by Ebay in 2005 before the company generated a lot of interest from Facebook, Google and Microsoft. Ebay had sold most of its shares to an investment company. In conclusion, Skype became a subsidiary of Microsoft. The purchase price was $ 8.5 billion.


Skype uses proprietary software programmed by developers in Luxembourg. There is no cost in the basic version, but calls to people who do not use Skype are charged. Once the user has downloaded Skype, they can use various tools. The mediation and transport of the data is carried out by means of the connection between different IP addresses. Only when the user logs in can he communicate with another user through the Skype server.

  • Internet telephony: Using a headset, another subscriber is called via Skype.
  • Conference calls: Multiple participants can talk to each other in a conference call
  • Videotelephony: If there is a webcam available, participants can be contacted by video call.
  • Telephone video conferencing: Multiple participants can start a video conference. You see and hear yourself - the conference creator can adjust the video chat management and display settings.
  • File transfer: Other Skype users can send a variety of files. As a general rule, the recipient must agree to the download.

Click-to-call with Skype

Click-to-call can increase the click-through rate of ads in commercial promotion. With a single click, the user has the possibility to set up a call directly to the company. This can also be done with the help of Skype. However, to recognize phone numbers in search results, you must first download the respective plug-in.

Practical importance

Millions of people use Skype to communicate. In particular, people who spend a lot of time in other countries can use Skype to keep in touch. The software can be used by both individuals and companies, but different terms of use apply. At the same time, for security reasons, using Skype for Business is not always recommended, as Skype has been criticized several times for its security vulnerabilities.

To be able to use Skype Internet telephony, you need at least one headset on your computer. For other devices, such as laptops, smartphones or tablets, all you need to talk to other people via Skype 'is a built-in hands-free function. Anyone who also wants to use video telephony needs a webcam or a camera built into the terminal device. Skype generally recognizes all connected devices and makes it very easy to use. Skype is also known for its good voice quality during calls.

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