How PLG actually works
In a product-led motion the product does the selling. Users sign up directly, usually into a free trial or freemium tier, experience value on their own, and convert to paid without necessarily talking to a salesperson. Growth comes from a tight loop: acquire users cheaply, get them to an activation moment fast, and let the product's value and any built-in sharing pull in more users. Sales, where it exists, focuses on expansion and larger accounts rather than every first purchase. The model trades sales leverage for product and onboarding investment.
PLG vs sales-led growth
Sales-led growth runs deals through people: marketing generates MQLs, sales works them to SQLs and closes. PLG runs deals through the product: signups activate into PQLs and convert themselves, with sales stepping in selectively. Neither is universally right. PLG suits products with fast time-to-value, broad appeal, and low friction to try. Sales-led suits complex, high-price, or heavily customised products where a human has to shepherd the purchase. Many companies run a hybrid, using PLG to acquire and qualify and sales to expand.
What PLG changes about paid acquisition
PLG rewires the ad account's job. The goal shifts from generating leads for sales to driving cheap, qualified signups the product can convert, which means the near-term conversion is a trial start and the real objective is activation and paid upgrade. Because signups are cheaper and more numerous than sales leads, PLG accounts usually have richer conversion data to bid on, but they also risk optimising to tourists. The discipline is feeding activation and revenue signals back so bidding chases users who reach value, not just the cheapest signup.
The economics that make PLG work or fail
PLG lives and dies on unit economics that a sales-led business can paper over with deal size. Because first purchases are often small and self-serve, PLG usually depends on expansion revenue and retention to make lifetime value clear the cost of acquisition. A low activation rate or weak retention quietly breaks the model even when signups look cheap. iClick underwrites PLG paid spend against activation and expansion, not signup cost, because a cheap signup that never activates or retains is not growth, it is churn with a delay.

