We are winning in one segment. When is it right to add a second ICP, and how do I know we are not just bored?

Makes the case that a second segment is something you earn one to two years after your first motion is genuinely repeatable, and names the resourcing mistake that sinks most early expansions.

From Fuzzy to Focused: Mastering Your Ideal Customer Profile (ICP) to scale successfully beyond Product-Market Fit

From Oxx by Ingrid Bonde Akerlind 16 min read

• Grades ICP precision: bad is all companies with 1,000 to 10,000 employees, better is CFOs in professional services in DACH and France at 50 to 500 million dollars.
• Post product-market fit you want one strong ICP with a scalable motion, not several unfocused segments.
• Add a second segment only after the team proves it can predictably land the first, likely one to two years later.
• Find the criteria by labelling existing customers and checking which traits predict churn, renewal, or expansion.

Lays out exactly what breaks in sales, marketing, onboarding and cost structure when you move segment in either direction, which is the honest cost sheet to read before you add an ICP.

Should You Go Upmarket or Downmarket? What Actually Changes in Your GTM When You Do

From Kalungi by Cris S. Cubero 12 min read

• Moving up or down market is a structural change to the motion and cost structure, not a pricing or packaging tweak.
• Upmarket brings finance, operations, security and executives into the deal, so sales is no longer optional and cost to serve rises.
• Downmarket only works if the product carries the conversion; cut price without redesigning onboarding and you add volume while compressing margin.
• A third option founders skip: tighten your ICP inside the segment you already win in rather than moving at all.

Accel India's three tests for a segment (uniformity, enough size, reachability at a sane acquisition cost) are the cleanest way to judge whether a candidate second ICP is a real market or a distraction.

Defining Your Market: Choose the right peak before you start climbing the mountain

From SeedToScale Insights (Accel India) by Accel India 12 min read

• Treats 2 million dollars of ARR as the benchmark by which product-market fit has actually happened.
• A TAM of 500 million to 1 billion dollars gives you a chance at 50 million dollars of revenue.
• CAC should be recovered in 2 to 3 months of revenue if bootstrapped, under 12 months if VC backed.
• Do not enter a new region unless you can see 5 to 10 million ARR there, and pick a second domain only past 3 to 5 million.

Airtable added a second, much larger segment on top of a beloved first one, and Liu talks through what had to be repeatable before that worked. A useful reality check on whether you are ready or just bored.

Scaling for the Enterprise: Top 5 Lessons on the Upmarket Journey with @AirtableApp CEO Howie Liu

On SaaStr AI by Howie Liu 31 min