ADP applicant tracking system ATS Axonify Benefits technology Cara Brennan Allamano Ceridian Core HR Emerging technology employee communication employee training GR8 People Great resignation HR Tech Conference news HR tech industry HR tech market funding HR Technology IBM Indeed Kronos Inc. Lattice Leadline lifespeak M&A Mental Health merger and acquisition Microsoft Nudge Oracle Personio Retention SAP SumTotal Systems tech funding Wellbeats wellbeing wellness Workday