Our Marketing team uses HubSpot to schedule social media posts, for example. It would be awesome to plug into their tool so we can push marketing tasks with relative dates, and they can relay when those are ready and completed. It's unlikely marketing would switch over to a completely new tool (Aha, JIRA core).
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Through Zapier, its possible to create an integration where New features created in Aha! will create tasks in Hubspot.