Communication in the Workspace is done via Discussions.
They are an incredibly flexible way to engage with your team and work together.
You can see all ongoing discussions in the Discuss menu in the Workspace. It's a Board with all the posts, announcements, information and questions from your team. It works in a similar way to the Facebook Feed. You can comment on posts, like posts or comments and share your piece of mind.
Discussions are neatly kept in threads making it easy to follow new comments at your own speed, not the speed of chat.