Hey, we would like to know if in our jira product discovery project, the collaborators that we add, needs to have all of them a jira account or instead can be external users
There are 2 role in Jira Product Discovery. Creator (license user) and Contributors (unlicensed user). They are both need Jira account.
More information in User product access: https://support.atlassian.com/jira-product-discovery/docs/manage-your-teams-product-access/