Quote:Microsoft's upcoming operating system Windows 10 version 1903 splits Cortana and Search to separate one from the other.

Cortana, a digital assistant created by Microsoft, was integrated in the Windows 10 operating system when it was released by Microsoft in 2015.

Microsoft linked Cortana to Search by creating a unified interface that powered search and Cortana at the same time.

While the company never provided an official statement why it did that, a likely explanation is that it wanted to get as much exposure as possible for the new feature.
Search is one of the core native features of Windows; when users interact with the search bar placed on the Windows 10 taskbar or search in the Start Menu, they are exposed to Cortana at the same time.

The bundling did not sit well with Windows users who just wanted to use search. I stated in 2014 that I would not be using voice-controlled or digital-assistants anytime soon and provided a list of reasons why I made that decision.

My main objections still stand: interaction requires remote servers, functionality is fairly limited, and there is no way to train these assistants locally.

While there were options to turn off Cortana, Microsoft changed these frequently and made it difficult to keep Cortana disabled on systems because of that.

Full reading: https://www.ghacks.net/2019/01/17/microsoft-to-split-search-and-cortana-in-windows-10-version-1903/