Skype for Business (PC) and Lync (Mac), included in the Online Essentials and Business Premium plans, allow you to communicate with your colleagues, customers and partners via online conference call or HD video conference. With just a couple of clicks, you can share your screen or invite up to 300 people inside or outside your company to take part in an online conversation.

Please not that Microsoft is migrating Skype For Business Service and is including it as a part of the Microsoft Teams app. All features will remain the same but calling and meeting options will be access from Teams rather than from Skype For Business