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Slack Technologies
Slack Technologies, founded by Stewart Butterfield, built a workplace messaging platform acquired by Salesforce for $27.7B in 2021.
Slack Technologies
Stewart Butterfield, along with co-founders Cal Henderson, Eric Costello, and Serguei Mourachov, launched Slack Technologies in 2013 after a failed attempt to build a game called Glitch. The company went public via a direct listing on the New York Stock Exchange in June 2019 (per NYSE filings, 2019). Slack's wealth origin derives from Butterfield's prior success selling Flickr to Yahoo in 2005, which funded the early development of Slack (per The New York Times, 2015). Slack's core product is a cloud-based messaging platform designed to replace email as the primary internal communication tool for organizations. The platform integrates with over 2,400 third-party apps, including Google Drive, Salesforce, and Zoom, and supports channels for project-specific conversations. Key client segments span technology, media, retail, and professional services across North America, Europe, and Asia-Pacific (per Slack's own case studies). Deployed at scale, Slack counts companies such as IBM, Target, and Oracle as clients (per Slack customer references). Slack was acquired by Salesforce for $27.7 billion in a deal finalized on July 21, 2021 (per Salesforce, 2021). The integration has deepened Salesforce's collaboration suite, with Slack now serving as the front-end interface for Salesforce Customer 360. The acquisition also brought enterprise-scale revenue: Slack reported over $1.5 billion in annual recurring revenue at the time of the deal (per Salesforce, 2021). Post-acquisition, Slack has continued to operate as a distinct unit within Salesforce, with updated branding and product enhancements focused on AI and automation (per The Verge, 2023). Slack Technologies' structural differentiator is its transformation from a venture-backed startup to a fully integrated subsidiary of Salesforce, one of the world's largest enterprise software companies. This architecture provides Slack with deep capital resources and access to a customer base of over 150,000 organizations, while retaining its own product identity and engineering culture — a balance rare in large-scale tech acquisitions.
General information
Firm type
Asset Manager
Year founded
—
AUM
Undisclosed
Location
Region
North America
Country
United States
City
San Francisco
Corporate office
San Francisco, CA, United States
Sector focus
Frequently asked questions
Who runs investment decisions at Slack Technologies?
Slack Technologies is a subsidiary of Salesforce, which is publicly traded. Investment decisions are made by Salesforce's corporate development team, led by CFO Amy Weaver and the executive leadership. Post-acquisition, Strategic capital allocation for Slack's product and engineering initiatives is governed by Salesforce's annual planning process.
How does Slack Technologies source proprietary deal flow?
As a wholly owned subsidiary of Salesforce, Slack does not independently source investment deals. Salesforce's corporate development team identifies acquisitions and partnerships to enhance the Salesforce ecosystem. For instance, Slack's 2019 acquisition of Astro, an email startup, was part of Slack's independent pre-acquisition strategy (per TechCrunch, 2019).
Is Slack Technologies structured as a single family office or does it operate more like a venture firm?
Slack Technologies is not a family office or venture firm. It is a publicly acquired enterprise software company (by Salesforce) that provides collaboration tools. All capital allocation is managed by Salesforce's corporate treasury.
Does Slack Technologies participate in fund commitments or only direct deals?
As a subsidiary, Slack does not participate in external fund commitments. Salesforce, its parent, makes strategic investments and acquisitions through its corporate development arm, not fund-of-funds commitments.
What investment stages does Slack Technologies typically target?
As an operating company, Slack's historical investments were strategic acquisitions of complementary technologies, pre-revenue to early-stage. Post-acquisition, any future investments would be at Salesforce's discretion, targeting integrations with the Salesforce Customer 360 platform.
Which sectors does Slack Technologies explicitly avoid?
As a collaboration software company, Slack avoids sectors unrelated to enterprise communication and productivity tools. It does not invest in sectors like biotech, energy, or real estate.
How is Slack Technologies related to Salesforce?
Slack is a wholly owned subsidiary of Salesforce, acquired in July 2021 for $27.7B. It operates as a distinct unit but with integrated roadmap and financial support from Salesforce (per Salesforce, 2021).
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