Skype for Business for Android

For those who do business, there is a lot of app for them

Screenshots

Hunter's comment

Anyone can invite skype for business mobile application when invited to skype for business or lync meeting. However to use the full parity of skype for business mobile apps, you must have soype for business or lunc account.

Link

https://play.google.com/store/apps/details?id=com.microsoft.office.lync15&hl=en