With Windows 10, Microsoft has opted for an operating system that is constantly being further developed instead of being replaced by newer systems. Users have to deal with updates quite often; there is a new version twice a year, a so-called function update.
If you are not always up to date, you have to keep an eye on the end of the service period, because Microsoft does not maintain the individual Windows 10 versions indefinitely. When support ends, there will be no more security updates. This makes the PC vulnerable and insecure in the long run.
Users of Windows 10 1809 have a little longer time to update their computer due to the corona pandemic. Instead of the planned May 12, 2020, Microsoft will provide the system with security updates until November 10. Users of the enterprise and education version of Windows 10 1803 can now also use the system until November 10, 2020.