Accel partner Braccia's bet on workplace software company Slack, which went public in 2019 at a $23 billion market cap, remains his most lucrative.The investor led Slack's $1.5 million seed round in 2009, twelve years before it was acquired by Salesforce for $27.7 billion.Other successful deals include Cloudera (2017 IPO), Lynda.com (acquired by LinkedIn), MyFitnessPal (acquired by Under Armour), Cornershop (acquired by Uber for $3 billion) and UserTesting (IPO 2021).Braccia was the first investor in website builder Squarespace in its 2010 Series A; the company went public in 2021 and had a market cap of $5.2 billion as of April 2024.