Slack co-founder Stewart Butterfield encountered unexpected hurdles during the first two years after Salesforce’s $27.7 billion acquisition, revealing cultural and operational tensions that complicated integration efforts.
- Slack faced cultural and operational challenges post-acquisition
- Salesforce’s traditional sales model clashed with Slack’s approach
- Butterfield left after integration frustrations and leadership departures
What happened
In December 2020, Salesforce announced its acquisition of Slack for $27.7 billion, more than doubling Slack’s stock price at the time. Johnny Rodgers, one of Slack’s original eight employees, has chronicled the acquisition’s aftermath in a detailed first-hand account, focusing on the first two years inside Salesforce. Despite the initial excitement, Slack’s founder Stewart Butterfield only had about an hour of direct interaction with Salesforce CEO Marc Benioff before the deal was finalized.
Following the acquisition, Slack encountered unexpected inefficiencies within Salesforce’s operations. Rodgers recounts that costly celebrity endorsements and lavish executive retreats coexisted alongside strict travel restrictions and frequent layoffs. Internally, Slack employees had to adjust to Salesforce’s ticketing system for support issues, completed mandatory Trailhead quizzes, and were forced to revert to email communication—a stark contrast for Slack’s product culture.
Why it matters
The cultural disconnect impacted Slack’s adoption within Salesforce, especially in the sales division. Slack’s sales strategy required consensus from entire leadership teams, differing from Salesforce’s more departmental sales process. Key Slack features went underutilized, and Salesforce teams showed limited understanding or enthusiasm for the Slack product.
Butterfield’s struggles to influence Salesforce leadership on operational and cultural issues, including luxury spending and integration approach, highlight the challenges tech giants face when merging distinct corporate cultures. The lack of Slack’s cultural assimilation caused internal frustrations, culminating in Butterfield’s departure in late 2022, shortly after a high-profile event at Davos where priorities seemed misaligned with customer engagement expectations.
What to watch next
Salesforce continues to prioritize Slack’s development, recently enhancing Slackbot with AI capabilities and exploring embedded coding functionality. Meanwhile, Slack remains a core element in Salesforce’s product ecosystem, evidenced by significant client shifts such as Meta’s move from Google Chat to Slack in 2026.
Johnny Rodgers suggests additional insights into Slack’s journey and future plans will be shared in forthcoming writings. Tracking these updates will provide clearer understanding of how Slack positions itself innovatively within Salesforce’s broader strategy and how it navigates cultural integration moving forward.