Slack's core marketing engine is product-led growth. The freemium plan removes procurement barriers and allows teams to adopt Slack without IT approval or budget. Individual users experience the product's value, advocate internally, and drive paid upgrades organically. This strategy produced some of the lowest customer acquisition costs in enterprise SaaS history.
Post-Salesforce acquisition, Slack has layered a top-down enterprise sales motion onto its product-led foundation. Salesforce's 70,000+ global salespeople include Slack in multi-product enterprise proposals, targeting CIOs and IT buyers with a platform value proposition rather than a point-solution pitch.