Skype is great for home and work and lets you connect with millions of people to grow your business. If you want to use Skype at work, you have two options – either use the same Skype that you use at home or use Skype for Business.
The Skype that you use at home is great for smaller businesses of up to 20 employees. It is free to use, unless you want to buy credit to make calls to landlines and mobiles.
Skype for Business is a communications and collaboration platform that brings together an experience inspired by Skype with enterprise-grade security, compliance and control. It lets you add up to 250 people to online meetings, allows you to manage employee accounts, and is integrated into your Office apps.
It offers features including presence, IM, voice and video calls, and online meetings. It is built right in to Microsoft Office, so initiating chats, calls and meetings is an integrated experience within Office.