Build a space for teams
Spaces are private (or open) collaboration areas, great for teams and projects.
For example, your Marketing team could have a space with their own blogs, calendars, and documents. Or you can build a corporate knowledge base with dedicated wikis and discussions about your products.
Create groups for permissions
With groups, it's easier to know who can view and share content. You can set up permissions for spaces, channels (like a specific blog), or even on individual pieces of content.
For example, you might want everyone to be able to post to your product ideas forum, but only have your product management group be able to reply.