Windows is a common operating system for computers and is developed by Microsoft. It has a graphical user interface that has evolved over many, many years. As a result of these changes, there are constant updates of Windows even today.
Microsoft has created Windows Update which is a service that is provided by Microsoft to users that use the Windows operating system. Windows Update provides routine updates for all of the Windows operating system plus its installed components and software running under Windows. A Microsoft Windows update typically includes security updates and critical updates.