The only way to apply limitations to what a user of the board can accomplish would be through Business Class and adding users to the board as observers. Observers are limited to view the board, and you can enable commenting/voting if you prefer. They won't be able to do anything else like add information to a card, however.
As a Jira power user, I was at first doubtful that Trello could benefit my workflow. Jira already uses boards (ones you can customize!), so why would I even need to use Trello?! In this post you will...
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