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Series B ready — the efficiency story

Series B underwriters don't buy growth. They buy efficiency.

At Series B, the question shifts. It's no longer "can you grow?" — it's "can you grow efficiently, retain the revenue you win, and expand what you have?" Opagio builds the efficiency narrative on the intangible infrastructure that makes it real: customer capital, data moat, ops layer, pricing architecture.

Run the Series B Diagnostic The efficiency story that unlocks Series B

You recognise the new bar

Three numbers tell the story. None of them are revenue growth.

  • Magic number 0.9. Burn multiple 2.2. A year ago those read as acceptable. Today the partner meeting is a polite grilling on exactly those ratios.
  • CAC payback is lengthening. You suspect it's a mix issue, not a unit-economics issue — but you cannot yet show it at segment or cohort level.
  • NRR 108% is no longer enough. The category leader is at 128%. Partners are asking for the expansion story and you don't yet have the pricing or retention architecture to answer.
47%+ Rule of 40 median has moved from 40 into the mid-to-high 40s
120%+ Top-quartile NRR at Series B in 2025–26
< 1.5 burn multiple — the strong signal at Series B
Outcomes

What the diagnostic maps

  • An efficiency read grounded in the Opagio 12. Which drivers are producing the expansion, where retention risk concentrates, which segments underwrite the next 24 months.
  • Unit economics, restated. Cohort-and-segment denominators replace blended averages — with pricing and packaging recommendations that recompound by Q3.
  • A Series B narrative stack. Category case, efficiency case, moat case, operating case — each anchored to measurable intangible assets, not anecdote.
Rule of 40 medians for Series B have shifted from 40% into the mid-to-high 40s since 2024. The efficiency bar has moved — and the narrative has to move with it.

Sources: Bessemer State of the Cloud 2024; Battery OpenCloud 2024.

The Bottom Line

Series B is priced on durable efficiency, not headline growth. The companion pages unpack the specifics: the 2025 efficiency bar and why it moved, and the 18–24 month playbook to move NRR from 108% to 128%. The diagnostic tells you where the binding constraint sits.

Stop selling growth. Start selling efficiency.

12 drivers. 8 minutes. The shape of the efficiency narrative your Series B lead will price against.

Run the Series B Diagnostic