We primarily use the solution to organize projects.
Trello is mainly for a Kanban-style of product management. You have a set of tasks and you'll move tasks from one phase to another phase. They won't do anything themselves from the organization's perspective, or from the strategy or the product perspective. A user needs to manipulate the information and set up the processes. If they want to introduce any product, they'll make a different board for that product. Jira, on the other hand, for example, has both a Scrum mode for managing projects and having a toolkit as well as a Kanban-style board.