These additional tools brighten up your daily life
They're not indispensable, but they're very useful.
These tools meet the specific needs of specific companies. They are modular, adaptable and are very good complements to your collaborative toolsMicrosoft. You just have to find the one that suits you, and there is surely one...or several.
For more details:

Yammer: Socialization tool
Yammer is your company's private social network that allows you and your teams to collaborate effectively. You can start topics, invite your colleagues to participate, launch surveys or events, organize projects and create groups for each department. It is the essential socialization tool for companies.

Power BI: Analyze-collect-organize-decide

Delve: the content that interests YOU

Sway: Presenting is good, presenting well is better.

OneNote : Capture-Share-Organize
Take a note before you forget. Share your meeting notes so everyone has the same information. OneNote is a digital notebook synchronized on all your devices. If you're at home, on the road, or at the office, use OneNote to take notes wherever you are. OneNote automatically records and synchronizes your notes so you can stay focused on your ideas.