Microsoft Lync 2013: March 2015

Microsoft released Lync 2013, v15.0.4701.1000
See description in KB2956174 and download from here x86 or x64

Updates for Lync Server 2013: February 2015

Microsoft released Lync Server 2013, v5.0.8308.872
See description in KB3031061 and download from here

Microsoft Lync 2013: February 2015

Microsoft released Lync 2013, v15.0.4693.1001
See description in KB2920744 and download from here x86 or x64

Updates for Microsoft Office Web Apps Server 2013: February 2015

Microsoft released an update for Microsoft Office Web Apps Server 2013
See description in KB2956101 and download from here

Updates for Microsoft Lync Server 2010: February 2015

Microsoft released an update for Microsoft Lync Server 2010, v4.0.7577.710
See description in KB3030726 download from here

Updates for Microsoft Office Web Apps Server 2013: January 2015

Microsoft released an update for Microsoft Office Web Apps Server 2013
See description in KB2920737 and download from here

Updates for Lync Server 2013: December 2014

Microsoft released Lync Server 2013, v5.0.8308.866
See description in KB2809243 and download from here