Last updated: October 2026. Written by Athar Ahmad, Certified Bubble.io Developer and Tech Architect, Simple Automation Solutions.

What is product-led growth?

Product-led growth, or PLG, is a go-to-market approach in which the product itself drives acquisition, conversion and expansion. Prospects sign up, try the product, reach value on their own and pay when they are ready, often through a free trial or a free tier. People find out about it through the product and word of mouth more than through salespeople.

What is sales-led growth?

Sales-led growth, or SLG, relies on salespeople and a defined sales process to find, qualify, demonstrate and close customers. Prospects talk to a person, see a demo, negotiate and sign, often with a contract. It suits products that are complex, expensive or involve several decision makers.

PLG vs SLG at a glance

What about founder-led sales?

Early-stage B2B startups often begin with founder-led sales, in which the founders personally find the first customers, have discovery conversations and sell by hand. It is neither strictly product-led nor sales-led. It is how you learn what to build and who will pay, through problem conversations and founding-customer offers.

Which fits a B2B SaaS for professional firms?

It depends on the product. A tool for law firms or accountancies often involves confidential data, several decision makers and a need for trust, which favours a sales-led or assisted approach, at least at the start. A simple, low-priced tool that a single user can try in minutes may suit a product-led approach. Many B2B SaaS companies blend the two: free trials and self-serve for small customers, and a sales process for larger ones.

What does PLG need from the product?

• A clear, quick path to the first moment of value.
• Onboarding built into the product, guiding users to their first result.
• A free trial or free tier that does not cost too much to serve.
• A simple, understandable pricing page.
• Analytics on activation, retention and conversion.
• Self-serve billing and support.

What does SLG need?

• A clear target customer and message.
• A repeatable sales process and a way to track deals.
• Demos, proposals and contracts.
• Onboarding and customer success after the sale.
• Enough price per customer to pay for sales effort.

Can you start with one and add the other?

Yes, and many do. A common path is founder-led sales to learn, a self-serve entry level once the product is simple enough and a sales team for larger accounts. The wrong move is to adopt a model your product does not support, such as selling a complex, sensitive product with no human contact.

How does this affect what you build first?

A product-led product needs self-serve sign-up, onboarding and billing in version 1. A sales-led product can launch with a simpler front door and a stronger demo and admin. Decide early, because it shapes scope and cost. See what to cut before you build and what an MVP really costs. Our Discovery Sprint ($345, delivered in 24 hours, credited toward the build) includes the go-to-market approach in the plan, and builds start at $3,500.

Frequently asked questions

What is product-led growth?

A go-to-market approach in which the product drives acquisition, conversion and expansion, often through free trials or tiers and self-serve sign-up.

What is sales-led growth?

A go-to-market approach that relies on salespeople and a sales process to find, demonstrate and close customers.

Is PLG or SLG better for B2B SaaS?

Neither is better in general. Product-led suits simple, low-priced products that show value quickly. Sales-led suits complex, expensive or sensitive products. Many blend both.

What is founder-led sales?

Founders personally finding and selling to the first customers, which is how many B2B startups learn what to build.

Does the model affect what I build?

Yes. A product-led approach needs self-serve sign-up, onboarding and billing from the start, while a sales-led approach can launch with a simpler front door.