Product-led growth (PLG) works...until it doesn’t
Most B2B SaaS startups don’t lack projects. They lack structure. Here’s why growth becomes inconsistent and how to turn it into a repeatable, scalable engine.
Product-led growth is one of the fastest ways to get traction in SaaS. It lowers the barrier to entry, lets users experience value quickly, and removes friction from the buying process. In early stages, this often works extremely well. But over time, something starts to shift. Usage grows, but revenue does not follow at the same pace. Larger accounts show interest, but hesitate to convert. What worked before starts to feel less effective.
You might recognise this:
strong product usage, but limited upgrades
multiple users in one account, but no expansion
larger companies engaging, but not converting
The difference between PLG and SLG
At its core, the difference is simple. PLG lets the product drive the journey, while SLG introduces guidance into the decision process. In practice, that means:
PLG focuses on activation, usage, and self-serve conversion
SLG focuses on qualification, conversations, and business impact
Both are valuable, but they solve different parts of the growth journey.
The mistake most teams make
Many startups treat this as a switch. They move from PLG to SLG as if one replaces the other. That is usually where friction starts to appear. A more effective approach is to connect them. Product behaviour already tells you a lot about intent. The challenge is acting on it at the right moment. Some simple signals to look for:
increased usage over a short period
multiple team members joining
repeated interaction with key features
What changes when you connect both
When product and sales start working together, things begin to feel more natural. Sales conversations become more relevant, because they are based on actual usage. Buyers move faster, because they already understand the value. This often leads to:
higher deal sizes
better conversion on qualified accounts
more consistent expansion revenue
A simple validation
If a user shows strong intent inside your product today, what happens next? If the answer is “nothing”, that is likely your biggest missed opportunity.
