Every ETRM selection I have sat through begins the same way: a spreadsheet with three columns labelled Endur, Allegro, and RightAngle, and a hundred rows of features that all three vendors will happily tick. The spreadsheet never decides anything. The commodity mix decides, the operating model decides, and a handful of ugly operational questions decide. This is the comparison I wish someone had handed me before my first selection committee.
One fact first, because it reframes the whole exercise: all three platforms now sit under ION Group. ION acquired Openlink, which brought Endur and RightAngle with it, and then acquired Allegro. You are not choosing between three companies anymore. You are choosing between three product philosophies with one owner, one commercial playbook, and increasingly one roadmap vocabulary. That changes how you negotiate, and it changes what differentiation actually means.
