📄 Article
✓ Link checked
Freemium
Intermediate
Why we picked it
Lenny interviewed dozens of people who built Airbnb, DoorDash, Thumbtack, Etsy, and Uber, then distilled how they actually got started. This opening piece frames the chicken and egg problem and why almost every winner picked one side to build first. It is the single best overview of the exact question you are asking.
From
Lenny's Newsletter
by Lenny Rachitsky
~25 min read
- Nearly every marketplace solved the cold start by focusing on one side
- Liquidity, not brand or polish, is the early priority
- The biggest marketplaces leaned on just a couple of supply levers
Open
lennysnewsletter.com →
📄 Article
✓ Link checked
Free
Intermediate
Why we picked it
This is the most concrete answer to which of your two customers to define first, built from interviews with 17 major marketplaces (Airbnb, Uber, Etsy, DoorDash and more) rather than one founder's opinion. The finding is blunt: about 80 percent of successful marketplaces poured their early effort into the constrained side, usually supply, and built liquidity in one narrow niche before expanding. It is a practical playbook you can map onto your own marketplace this week.
From
Lenny's Newsletter
by Lenny Rachitsky
Long read (about 20 minutes)
- Most successful marketplaces defined and won the constrained side first (usually supply), then let demand follow, so start by naming your ideal customer on that side.
- Early liquidity comes from going deliberately narrow (one city, one category) and getting it genuinely working before you widen the definition of who you serve.
- The number of levers the biggest marketplaces used to grow that first side was small (a median of two), so focus beats spreading effort across both sides at once.
Open
lennysnewsletter.com →
📄 Article
✓ Link checked
Freemium
Intermediate
Why we picked it
Once you decide supply is the harder side to get, this piece is the tactical playbook for signing up those first suppliers by hand. It catalogues the concrete levers real marketplaces used to seed supply from zero, with examples you can copy this week. Pair it with the overview to go from theory to a to-do list.
From
Lenny's Newsletter
by Lenny Rachitsky
~25 min read
- Concrete tactics to recruit your first suppliers by hand
- Seed supply narrowly in one city or niche, not everywhere
- Fake or subsidize the harder side until real demand appears
Open
lennysnewsletter.com →
📄 Article
✓ Link checked
Freemium
Intermediate
Why we picked it
The other half of the problem: once you have supply, how do you get the first buyers so sellers do not churn out of an empty room. It covers hand matching early demand and the tactics marketplaces used before paid channels made sense. Read it alongside Part 3 so neither side of your market sits idle.
From
Lenny's Newsletter
by Lenny Rachitsky
15 min read
- Hand match your first buyers so early sellers see real transactions
- Concentrate demand instead of spreading it thin across a big market
- Early demand tactics rarely look like scalable paid marketing
Open
lennysnewsletter.com →
✍️ Essay
✓ Link checked
Free
Intermediate
Why we picked it
For a two-sided marketplace, the first real decision is which side to define and win first, and this essay makes the case plainly: figure out which side is harder to get, because that side is usually the more valuable one, and once you have it the other side gets 2 to 10 times easier. It then walks through concrete ways to seed that harder side without the other side existing yet, so it is a starting point for the pick-two problem rather than abstract theory. NFX has studied more marketplace network-effect businesses than almost anyone, which is why this is the canonical reference founders keep returning to.
From
NFX
by James Currier
Long read (about 25 minutes)
- Identify the constrained (harder to acquire) side first, and define your ideal customer there, because that side sets the pace for the whole marketplace.
- You can build standalone value for one side before the other exists (for example a tool suppliers use whether or not buyers are present) so you are not stuck waiting for both.
- There are many concrete seeding levers (subsidies, geographic or category constraints, manual matching), so pick the two or three that fit your niche instead of trying all of them.
Open
nfx.com →
✍️ Essay
✓ Link checked
Free
Advanced
Why we picked it
Before you sweat which side to seed, Gurley helps you judge whether your marketplace is even structurally worth building. He lays out ten factors (fragmentation, frequency, payment flow, network effects) that separate marketplaces that snowball from ones that stay empty. It is the investor lens on why some two sided ideas never reach liquidity no matter how hard you push.
From
Above the Crowd
by Bill Gurley
20 min read
- Great marketplaces enhance a market, they do not just aggregate it
- High fragmentation on both sides makes a marketplace more defensible
- Being in the payment flow is far stronger than sitting outside it
Open
abovethecrowd.com →
📖 Book
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Paid
Beginner
Why we picked it
The single best thing ever written on customer conversations. It teaches you to ask about the customer's life and past behaviour, not your idea, so you can't be lied to. If a founder reads one thing before talking to a single customer, it's this.
From
momtestbook.com
by Rob Fitzpatrick
~130 pages
- Talk about their life, not your idea.
- Ask about specifics in the past, not opinions about the future.
- 'That's so cool, I'd totally buy it' is a compliment, not data, dig for commitment and evidence.
Open
momtestbook.com →
📖 Book
✓ Link checked
Paid
Intermediate
Why we picked it
Before you tune CAC and take rate, this book gives you the structural picture of why marketplace economics compound: network effects, the chicken-and-egg cold start, and how pricing on one side subsidizes the other. Co-authored by Sangeet Paul Choudary, it stays readable while grounding the strategy behind the numbers you will later model. Read it as the framing layer under the spreadsheets.
From
W. W. Norton & Company
by Geoffrey G. Parker, Marshall W. Van Alstyne, Sangeet Paul Choudary
- Network effects, not features, are what make a two-sided model defensible, so your model should show them kicking in
- You often price and subsidize one side to seed the other, which is why a naive per-side CAC read can mislead you
- Solving the cold start (which side to build first) shapes every early acquisition and pricing choice you make
Open
wwnorton.com →
📄 Article
✓ Link checked
Free
Intermediate
Why we picked it
Since supply is usually the side you bootstrap by hand, this is a focused list of 28 concrete ways real marketplaces did it. It goes wide (referrals, going vertical, recruiting from competitors, building tools sellers want) so you can find tactics that fit your category. Keep it as a brainstorming sheet when your supply side is stuck.
From
andrewchen.com
by Lenny Rachitsky (via Andrew Chen)
15 min read
- There are many supply tactics, most marketplaces only need a few
- Building a useful tool for sellers can pull supply in on its own
- Recruit supply from wherever those sellers already operate today
Open
andrewchen.com →
✍️ Essay
✓ Link checked
Free
Intermediate
Why we picked it
Andrew Chen ran rider growth at Uber and now invests at a16z, so this is the canonical breakdown of how marketplaces get off zero. He organizes the best thinking on the chicken and egg problem around one honest idea: you almost never launch supply and demand at once, you seed the harder side first (usually supply) in a tiny atomic network, then pull the easy side in. Treat it as a starting map of tactics, then pick the one or two that fit your city and niche.
From
andrewchen.com
by Andrew Chen
~20 min read
- Solve the chicken and egg problem by picking the hard side (usually supply) and getting it dense in one narrow slice: a single city, campus, or vertical, before going wide.
- Liquidity, not signups, is the real metric: enough activity that a buyer who shows up actually finds a match.
- You can bootstrap one side manually (curate listings, run single-player-mode value) before the other side exists, which answers the 'no supply or demand yet' worry directly.
Open
andrewchen.com →
✍️ Essay
✓ Link checked
Free
Advanced
Why we picked it
Balfour, who led growth at HubSpot and founded Reforge, breaks the cold start into the mechanics of how you actually reach liquidity. He is precise about seeding one side, defining your atomic unit, and measuring whether the market is filling up. Read it when you want a growth practitioner's frame rather than a list of anecdotes.
From
Brian Balfour
by Brian Balfour
20 min read
- Define the smallest unit where your marketplace can feel liquid
- Seed one side deliberately, then measure the fill rate
- Liquidity is the metric that tells you the room is not empty
Open
brianbalfour.com →
📄 Article
✓ Link checked
Free
Intermediate
Why we picked it
A short research backed breakdown of how three marketplace giants solved the cold start problem by hand. You will see that all three focused on one side of the market first and went offline to recruit it, Etsy scouring craft fairs and Airbnb photographing listings in person. Useful if you are building anything two sided.
From
Harvard Business School Working Knowledge
by Michael Blanding
8 min read
- Marketplaces won by getting supply first, then customers
- Etsy recruited its best sellers in person at craft fairs before going online
- Getting the right early users matters as much as getting many
Open
library.hbs.edu →
📄 Article
✓ Link checked
Free
Beginner
Why we picked it
This is the famous story of Airbnb flying to New York and photographing listings door to door, the most literal example of doing things that do not scale to fix a dead marketplace. Revenue doubled that week after eight flat months, which is the proof that hand work on supply changes the whole market. Read it when you need the courage to go do unscalable things yourself.
From
First Round Review
by First Round Review
12 min read
- Founders personally fixed listings instead of writing guidelines
- One week of manual work doubled revenue after months of flat
- The unscalable fix taught them what to build for everyone else
Open
review.firstround.com →
Why we picked it
The permission slip to recruit users by hand, do things manually, and deliver 'insanely great' experiences to your first few customers. The cheapest, most honest way to validate demand is to go get it one person at a time.
From
paulgraham.com
by Paul Graham
~15 min read
- Recruit your first users manually, don't wait for them to come.
- A tiny group of users who love you beats a big group who like you.
- Manual, unscalable effort early is a feature, not a failure.
Open
paulgraham.com →
Why we picked it
The definitive playbook for network and community-led products, drawn from Andrew Chen's a16z experience and interviews with Slack, Uber, Tinder, Airbnb and more.
From
Harper Business
by Andrew Chen
Book (~368 pages)
- Build the smallest self-sustaining 'atomic network' before trying to scale.
- Focus on the hard side of the network and give it a magic moment.
- Networks are anti-viral until they cross a density threshold, so start narrow.
Open
coldstart.com →
