I think the documentation is trying to refer to an add-on for Confluence Cloud now known as Confluence Google Drive. That said there's several integration add-ons you may be interested in, so here's a handy list:
Hope that helps! -nick wade
Head of Ecosystem, Marketplace
Hey Atlassian community, I help lead engineering at Sentry, an open-source error-tracking and monitoring tool that integrates with Jira. We started using Jira Software Cloud internally last year, a...
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