Skype for Business is the Microsoft software for instant messaging, video chat or e-meetings. The software Skype for Business, formerly called Lync, is intended for use at work, and must therefore not be confused with Skype which is intended for home use.
For more information about Skype for Business, please see the manufacturer's website: http://www.skype.com/en/business/
Microsoft is completely phasing out Skype for Business for the benefit of the more modern software Teams which, in addition to serving as a collaborative tool for groups, also includes chat and video features.
See, for example, https://techworld.idg.se/2.2524/1.726662/skype-byte-teams (in Swedish), https://dhirendrayadav.com/2019/07/31/microsoft-teams-to-replace-skype-for-business/, or www.proserveit.com/blog/future-of-skype-for-business.
No, this is different software. Skype is mainly adapted for home use. Skype for Business includes more features that are specifically tailored for use at work.
No. The software Skype for Business replaces the previous software Lync, which is no longer developed. Skype for Business is however more similar in appearance to Skype than Lync.
Skype for Business will be installed on all computers together with the installation of Office 2016.
You may also try Teams for group collaboration.
Please contact LTH Support.