Armstrong was VP of sales for reseller Tribridge, until it was acquired by DXC in July 2017. He was VP of sales at the former ePartners and came to Tribridge when it purchased that organization on Dec. 1, 2011. At the new company, he joins another former Tribridge and ePartners executive, Jeff Lynn, who is COO of GSM. Lynn was president of Tribridge from March 2015 through 2017 and joined that company in December 2011.