Slack wants to integrate with Team and it knows if it wants to succeed it has to make a relationship with Microsoft. This might not come so easily since Microsoft wants to dominate the world and everything around it.
Also, integration with Office comes with more information available to its current subscribers on hand. Now can they really make this happen?
Link
Also, integration with Office comes with more information available to its current subscribers on hand. Now can they really make this happen?
Link