Trello was launched five years ago, since then, more than 19 million people have used Trello to solve many different challenges both personal and professional.
Atlassian has its own excellent collaboration tools like JIRA, Confluence and HipChat. The purchase will help Atlassian expand their types of client base from predominantly geared towards IT industry to a wider portfolio. Trello, with its Kanban-style boards and a flexible card-based interface can be used for managing all sorts of projects and teams.
Trello's CEO announced that they will continue to operate as a standalone service. For users, you don’t have to change anything about the way you are currently using Trello. The integration between Trello and Atlanssian apps is to happen soon, and you will expect a more powerful Trello with increased featureset.