← SaaS Go-to-Market
Day 5 of 14
Product-Led Growth — When the Product Sells Itself
The PLG Model and Its Requirements
Product-Led Growth (PLG) means your product is the primary driver of acquisition, conversion, and expansion — not salespeople or marketing campaigns. Users try the product, experience value, upgrade to paid, and invite their colleagues. Slack, Notion, Figma, and Dropbox are canonical PLG examples.
PLG requires four things: the product must deliver value quickly (within the first session, not after weeks of onboarding), the value must be shareable or collaborative (so free users bring in paid users), there must be a natural upgrade trigger (the free tier is genuinely useful but has a meaningful limitation that paid removes), and the product must be easy to sign up for without sales involvement.
For an app like BathCheck aimed at OT professionals, PLG is partially applicable. OTs might try it for free, love it, and recommend it to colleagues in their practice. The practice manager then upgrades to a team plan. This is PLG working at a small scale — one user converts, then pulls in the organisation. The key is making sharing and collaboration a first-class feature, not an afterthought.
Activation, the Aha Moment, and Onboarding
The most critical metric in PLG is activation — the point at which a new user first experiences the core value of your product. In Slack, the aha moment was identified as '2,000 messages sent in the team.' For BathCheck, it might be 'completed your first assessment report and exported it to PDF.' For ShowerBuddy, it might be 'set up your first scheduled check and received the first confirmation.'
Everything in your onboarding should drive users toward the aha moment as fast as possible. Remove every step that isn't necessary to reach that moment. Use progress indicators, empty states that show what's possible, and contextual tooltips rather than lengthy onboarding tours.
Measure your activation rate: what percentage of new signups reach the aha moment within their first session? Industry benchmarks vary, but under 40% activation within first session usually indicates an onboarding problem. Improving activation from 30% to 50% has a larger effect on revenue than doubling your traffic — it's the most underleveraged growth lever in most early-stage SaaS products.
⚡ Today's Action
Define the aha moment for one of your apps in a single sentence: 'A new user has reached the aha moment when they have [done specific thing] for the first time.' This becomes the North Star for your onboarding design.
💡 Pro Tip
Map your current onboarding flow as a funnel: sign up → email confirmed → first login → first core action → aha moment. Measure the drop-off at each step. The step with the biggest drop is your top priority to fix.