Modern businesses use various web-based applications. Which web-based application allows users to collaborate when creating content?

the internet social media webmail web conferencing wiki

The answer to the question is wiki.

A wiki is a type of website where users can collaborative create various content. Businesses sometimes have wikis for knowledge management purposes - thus ensuring that information revolving about the company's business policy, products, processes, and people are constantly updated and thus everyone can know the most relevant information about these things accordingly - the information is not centered on an individual or group only.

it is wiki. : D