The wiki format for storing information has more than proved itself in the single most-used repository of human knowledge ever created, Wikipedia. In business, wikis function in two main ways: as a knowledge base and as a collaboration area. Although wikis are no longer at the cutting edge of office software, they are still a very useful tool, as they bring high-level functionality without any technical knowledge needed.
In Bitrix24, each workgroup has a wiki. Thus, to create a knowledge base that is accessible to everyone, use the wiki in a public group. You can use the roles in groups if for any reason you want to provide only read access rights to certain users.