To build the student side of its marketplace, Portfolium sold a paid B2B product to universities for learning assessment. This motion onboarded millions of students, creating the critical mass of supply needed to attract employers to the other side of the marketplace.

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A consumer-focused app, such as a safety platform for travelers, can create a high-margin B2B offering by selling "safety certifications" to businesses like hotels. This creates a new, highly scalable income source beyond individual user subscriptions.

When direct-to-consumer growth flattens and acquisition costs rise, B2B channels offer a scalable alternative. Betterment's founder notes their B2B expansion not only provided scale but also fed more users back into their retail product, creating a powerful growth flywheel.

Instead of marketing directly to individuals struggling to afford training, partner with the institutions they are already paying. This provides access to a stream of customers who have already demonstrated financial commitment.

While platform businesses (marketplaces) can achieve massive valuations, they are incredibly difficult and expensive to build due to the chicken-and-egg problem. For most founders, a traditional B2B SaaS model is a far safer and more direct path to success.

For EdTech startups, pivoting from D2C to B2B school sales is challenging, with long sales cycles. However, it creates a stickier business not subject to seasonal dips and, more importantly, provides equitable access to students in underserved communities, not just affluent families.

Golden's platform extends beyond a simple two-sided model by also serving governments, foundations, and universities. These entities don't host programs but have a vested interest in driving participation within their networks. This creates a powerful ecosystem and additional B2B revenue streams by providing technology to manage and influence engagement.

SellRaise begins as a utility, helping sellers easily list items across multiple marketplaces like eBay and Poshmark. By aggregating a critical mass of sellers (the supply side), it can eventually attract buyers directly. This strategy allows it to leverage existing platforms to solve the chicken-and-egg problem before ultimately aiming to replace them as an AI-native marketplace.

Instead of marketing directly to a fragmented customer base (e.g., fitness coaches), sell your platform to the agencies and mentors who already serve them. This leverages their distribution, resulting in a stickier, more profitable customer base with a lower acquisition cost.

1Password's growth illustrates the 'land and expand' model. Start with a B2C product individuals love, which they bring into their workplace. This creates organic internal demand, allowing you to then approach the company with an enterprise solution offering management and compliance.

StatusGator became a marketplace by first building a valuable single-sided tool. Data from free users searching for outages (one side) became the valuable product—early warnings—sold to paying enterprise customers (the other side), validating the model before fully committing.