How SLG actually works
In a sales-led motion, revenue runs through people. Marketing generates leads, qualifies them into MQLs, and hands them to sales, who work them through discovery, demos, proposals, and negotiation to a close. The product supports the pitch but does not sell itself, because the purchase is too considered, expensive, or customised for a user to complete alone. SLG trades the scalability of self-serve for the control and deal size that a skilled salesperson brings to complex buying decisions, which is exactly what enterprise and high-ticket products need.
SLG vs PLG
PLG lets the product acquire and convert users, with sales stepping in for expansion. SLG runs the deal through sales from the start. The choice follows the product: fast time-to-value and low friction favour PLG, while complexity, high price, procurement, and customisation favour SLG. The two are not enemies. A common mature pattern is product-led acquisition feeding a sales-led motion for larger accounts, where self-serve signups surface the companies worth a salesperson's time. The label matters less than matching motion to how customers actually buy.
Why SLG changes the CAC math
Sales-led growth carries a heavier cost to acquire, because salaries, commissions, and long sales cycles all load into CAC. That is only sustainable when deal sizes and lifetime value are large enough to justify it, which is why SLG and high-value contracts go together. It also means lead quality matters more than lead volume: a salesperson's time is expensive, so feeding them unqualified leads is far costlier than in a self-serve model. The whole system is tuned to fewer, better opportunities rather than cheap volume.
What SLG means for paid acquisition
In an SLG account, the ad's job is to generate qualified leads a sales team can work, which puts lead quality above raw cost per lead. Because sales time is the expensive constraint, the priority is optimising toward MQLs that become SQLs and closed revenue, using offline conversion feedback from the CRM. iClick treats an SLG paid account without closed-loop tracking as flying blind, because in a model where every lead consumes costly human effort, buying the wrong leads cheaply is more damaging than buying fewer good ones.
