PLG · Product-Led Growth
Product-Led Growth
What is PLG?
- The product itself drives growth
- Let customers try it first with free trials and freemium
- Reach the 'aha moment' fast
Shifting to PLG changes the numbers a company reviews every week. Instead of pipeline value and meeting counts, usage logs that trace sign-up, activation, conversion, and expansion become the agenda for the Monday meeting. The biggest change is that revenue accountability moves from the sales team toward the product team. Because the boundaries of a pricing plan and a single button on the first screen act as the sales pitch, pricing policy ends up being discussed in the same room as the product roadmap.
There are three main ways to run it. Freemium keeps a free plan open permanently. A free trial sets a time limit, such as 14 or 30 days. The open source model publishes the code and sells operations and support. On top of these comes PLS (product-led sales), which uses product usage signals to time sales outreach. Here the qualifying criterion shifts from MQL to PQL. You pick which accounts to contact based on how many times they actually used a core feature, not how many times they downloaded content.
That said, it isn’t a model you can bolt onto just any product. One person must be able to sign up without approval and see the value on their own, and products that need consulting or data migration to adopt don’t fit. As annual contract size grows, PLG alone hits its limits. The moment SSO, audit logs, security reviews, and contract redlines come into play, the self-serve flow eventually needs a stage where people step in.
The most common misconception in practice is the idea that 'if we open it up for free, it will sell itself.' If you cut sales staff first and only open a free plan, all you are left with is accounts that never convert and higher server and support costs. Making the free tier so generous that there is no reason to upgrade is another frequent mistake. Korean B2B adds one more problem. Even when a manager loves the product, the purchase goes through internal approval, a tax invoice, and an annual contract rather than a card payment, so deals stall right before payment. Unless you build a contract process that picks up where the free trial leaves off, all you get is an impressive signup count.
John KimInstructor John Kim, author of B2B Marketing Design and CEO of Nanum Consulting
Seungtae ParkAI transformation practitioner who teaches AI business development and marketing automation by building the tools himselfThe concept was named and popularized around 2016 by venture capital firm OpenView, and took shape alongside the success of freemium and free-trial SaaS.
Let’s look at a hypothetical case. Company A builds HR and payroll SaaS, with 38 employees and KRW 2.4 billion (≈ US$1,795,600) in annual recurring revenue. Its 12 salespeople closed deals only through demo meetings, and customer acquisition cost per rep rose nearly 40% in a year. The CEO decided to rebuild the sales model around a free plan within 6 months.
- When the CEO and the product lead dug into the numbers, only 18 of 210 monthly demo requests became contracts, and each deal took 9 weeks to close on average. Their conclusion: "Even if we double the meetings, we won’t hit our target."
- When the CPO opened a free plan for teams of 20 or fewer, they defined the aha moment as 'first payslip sent'. The onboarding goal became getting users to that point within 25 minutes of signing up.
- The growth team measured it: only 11% of accounts got as far as sending a statement within 7 days of signup. After replacing Excel upload with automatic template mapping and cutting the initial input fields from 14 to 6, that rose to 34%.
- The sales team lead set the PQL criteria as '18 or more employees registered + payslips sent 2 months in a row' and told the team, "Don’t cold-call anyone outside this list." About 60 accounts a month qualified.
- Working with the finance team, they added automatic quote generation so that even free accounts could move straight into internal approval and tax invoicing. Drop-off right before payment fell noticeably.
- Six months later, 5.2% of 4,100 free accounts had converted to paid, and 47% of new contracts came from PLG. Contract lead time dropped from 9 weeks to 3, and customer acquisition cost fell 38%.
- Products that show their value right away
- When users can sign up and get started on their own
- When individual or team adoption is easy
- Complex, high-value enterprise deals
- When adoption requires sales or consulting
- Products whose value is hard to show in a trial