Skype Free vs Skype for Business

What's the difference between Skype free and Skype for Business? Features Free Skype Skype for Business For Home, It is great for smaller businesses of up to 20 employees. Business, provides enterprise grade-security, allows you to manage employee accounts. Maximum number of users 1 300 Share photos, videos and files Up to 300 MB File storage and sharing with 1 TB of OneDrive storage HD video calling HD one to one or group video calling - now with call reactions