Vonage Holdings Corp., a cloud-connected communications services company, has appointed Margaret Smyth to its board of directors. She will also serve on the audit committee.

Smyth currently serves as vice president of finance at Con Edison, an electric and gas company. She also serves as director and chair of the finance committee for Martha Stewart Living Omnimedia, and on the boards of Mutual of America Investment Corporation and Mutual of America Institutional Funds.

Previously, Smyth held several senior leadership positions at United Technologies Corporation, including corporate controller and chief financial officer of the company's Hamilton Sundstrand division. Prior to that, Smyth served as vice president and chief accounting officer at technology company 3M. She also was a senior partner at two global accounting and professional services firms.