How we got here

B2B software has cycled through growth paradigms, each one a response to what stopped working before. Understanding where we've been makes it clearer why advocacy-led growth is emerging now.

Sales-led growth: the original motion

For most of the history of enterprise software, growth was synonymous with sales. You built a product, hired a sales team, ran outbound campaigns, and controlled the conversation from first touch to close. The sales rep was the primary interface between the company and the buyer.

This model worked when buyers had limited access to information. If you wanted to understand what a piece of software could do, you had to talk to the vendor. The demo was the only way to see the product. The sales rep was the only source of competitive intelligence. The vendor controlled the narrative because the vendor controlled the information.

Sales-led growth built enormous companies, and it still works for complex, high-ACV enterprise deals where the buying process is inherently consultative. But its limitations became clear as the market shifted. The cost of maintaining large sales teams scaled linearly with revenue targets. Buyers started doing their own research before talking to sales. And by the time a prospect booked a demo, they were often 70% or more through their decision, with opinions already formed from sources the sales team never touched.

Product-led growth: let the product sell itself

Product-led growth emerged as a response to sales-led's limitations. The thesis was elegant: if the product is good enough, let people try it. Remove friction. Offer a free tier and let usage drive conversion.

PLG produced some of the most remarkable growth stories in SaaS history. Slack, Zoom, Dropbox, Atlassian, and dozens of others proved that you could build billion-dollar companies with minimal (or no) outbound sales teams in the early stages. The product became the primary growth engine, and the go-to-market motion became a function of user experience rather than sales methodology.

But PLG has its own ceiling. When every product in a category has a free tier, the free tier stops being a differentiator. Conversion optimization has diminishing returns. And for products that solve complex problems for teams rather than individuals, the self-serve model breaks down, because the buying decision involves multiple stakeholders who need social proof and organizational buy-in, not just a personal trial.

PLG also created a specific problem: it generates users, but not necessarily belief. A buyer who signs up for a free trial knows the product. Whether they believe in it depends on something else entirely: hearing other practitioners talk about it, seeing it mentioned in their professional communities, the peer who says "we use this and it changed how we work."

Content marketing and influencer marketing: renting attention

Alongside PLG, and sometimes overlapping with it, content marketing became the dominant demand generation strategy for B2B SaaS. Blogs, whitepapers, webinars, podcasts, gated content, nurture sequences. The content marketing industrial complex grew into a multi-billion dollar business.

Content marketing works. Good content educates buyers, builds brand awareness, and creates inbound demand. But it has a fundamental limitation: all of it is branded. However useful the content is, the buyer knows it was created by the company selling the product. That awareness creates a credibility discount. The content might be accurate, but the reader applies a filter: "Of course they'd say their approach works. They're selling it."

Influencer marketing attempted to close this credibility gap by borrowing trust from people with audiences. In B2B, this has grown into a real practice. Brands pay industry figures, consultants, and professional content creators to talk about their products. The content appears on the influencer's profile, carrying their credibility.

The problem is that this model is advertising wearing a different outfit. Sophisticated B2B buyers know the influencer got paid. They apply the same credibility discount they apply to branded content, perhaps with slightly more generosity, but the discount is still there. The influencer's enthusiasm was purchased, and the buyer knows it.

Traditional customer advocacy: good instinct, wrong execution

The closest precursor to what I'm describing in this book is the customer advocacy category. Companies like Influitive built platforms that helped brands gamify customer engagement through portals, points, challenges, and rewards. Customers could complete activities (leave a review, participate in a case study, take a reference call) and earn points or prizes.

The instinct behind traditional advocacy is correct: happy customers are valuable, and there should be a system for engaging them. But the execution missed in a few important ways.

First, most advocacy platforms are internal-facing. They create portals that live inside the company's own walls, disconnected from the public platforms where buyers actually form opinions. A customer completing a challenge in a gamified portal is a very different thing from a customer posting about your product on LinkedIn where 2,000 of your target buyers can see it.

Second, the gamification model manufactures engagement. When a customer is completing tasks to earn points, the engagement feels like exactly what it is: someone doing something for a reward. A customer who chooses, on their own terms, to share their real experience publicly is operating from a different place entirely.

Third, traditional advocacy tools were built for customer marketing and customer success teams. They support activities like reference management, review collection, and community engagement, all valuable, but none of them designed to function as a pipeline channel.

The gap

So here's where we stand. Sales-led growth still works but struggles with trust and scale. Product-led growth still works but struggles with differentiation and organizational buy-in. Content marketing still works but carries a permanent credibility discount. Influencer marketing borrows credibility at a cost that buyers see through. And traditional advocacy has the right instinct with the wrong execution.

What's missing is a growth model built on the thing buyers actually trust: public endorsement from people who use the product and have no obligation to say nice things about it.

That's the gap Advocacy-Led Growth fills.