[4] She spent 12 years as an equity research analyst, providing coverage to institutional investors on more than 30 media, publishing, and advertising stocks.

[5] In this capacity, she was listed by Institutional Investor magazine as a top rated analyst for ten consecutive years.

[6] From 2006 to 2007 she was executive vice president of the Advertiser and Publisher Group in addition to her CFO responsibilities,[7] where she led a consortium with the newspaper industry, and launched a display ad platform.

Decker drove a proposed search deal with Google as an alternative to a transaction with Microsoft, but this was rejected by the U.S. Justice Department as a breach of United States antitrust law.

[12] Decker is on the boards of directors of Automattic,[13] Berkshire Hathaway,[14] Costco,[15] SurveyMonkey,[16] Vail Resorts and Vox Media.