Here's what it is for and what you can use a Virtual Private Network.
In the most basic sense, a VPN (Virtual Private Network) allows you to access the Internet using a private connection. When you click a link, your request goes to the correct server, which usually returns the correct content. Your data flow, without any obstacle, from A to B, and any site or service can see your IP address, among other identifying data.
When you use a VPN, all your requests are routed through a private server owned by the provider of the VPN service. The request changes from A to B through C. You can still access all the data you saw before, but the site (or web service) can only see data from the VPN service provider (such as IP address etc.).
What are the possible uses of a VPN? Here they are:
1) Navigate safely on a public Wi-Fi network
2) See TV programs regardless of geolocation and restrictions placed by providers
3) In certain nations, defeat an oppressive censorship. The data is encrypted and any type of communication between individuals cannot be intercepted and /or filtered
4) Avoid different prices. It will also be surprising, but some online shops practice a different rate depending on the country from which they receive the visits. The solution, to have less "discriminatory" prices, is to navigate through a VPN, very patiently.
5) Encrypt any data automatically. It is a method by which browsing Wi-Fi in public places can be made safe and kept away from public censors. Even if the data is intercepted, it will mean nothing to the hacker.
6) Improve online gaming speeds. Some Internet providers limit the speed of data transmission in gaming, with a VPN you can hide that you are playing and therefore have (potentially) a higher speed. Obviously, you have to rely on a VPN service close to you and that is able to support data traffic, otherwise, it is useless.
7) Secure and private voice chat. Although some chat apps have built-in encryption, VOIP apps usually do not have them. With a VPN, however, you are safe.
8) Perform sensitive searches without any kind of interference. Here again, we fall within the field of government censorship, which can only be overcome by the use of a VPN.
9) Use private torrent services. Although the BitTorrent peer-to-peer network has often been identified as a vehicle for piracy, it is at the same time unavoidable because the "legal" contents that travel there are much more than those of "dubious" origin. With a VPN all torrent" activities are made private.
10) Completely private collaboration. Yes, even the cloud and the tools for group chats can be the target of hackers, copyright theft and industrial espionage targets. A VPN can protect against these risks by encrypting communications.