Some time ago, I started a Lync 2010 to Lync 2013 migration process but, due to non-technical reasons, I could not finish it. No users were migrated.
Now I want to migrate from Lync 2010 to Skype for Business Server 2015. A triple mixed environment (Lync 2010 + Lync 2013 + Skype for Business Server 2015 ) is not supported, … Read more