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Leanpub Author Testimonials

What authors have had to say about Leanpub, on camera and in their own words.

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Every testimonial here is a passage from a Leanpub Launch video or Leanpub Podcast interview where an author volunteered something about publishing with Leanpub. The words are extracted by AI tooling with an instruction to be verbatim, and each one links to the moment in the interview it was said.

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Leanpub Gave an Independent Researcher a Free Book Launch

Kandasamy Selvaraj, author of Rethinking Performance Engineering for Agentic AI
“Thank you, Len, for giving this wonderful opportunity, and I wanted to thank Leanpub for giving this wonderful platform for people like me, an independent researcher, to providing this kind of publish, to provide a platform to do the free launch on my book. So to tell about myself, I'm Kandasamy Selvaraj. I'm a principal architect and a performance engineering leader, close to 20 years of experience primarily on performance engineering and observability on an enterprise-grade platform that process more like millions of transactions in an hour.”

From Kandasamy Selvaraj's Launch video recorded 2026-07-27 — watch this moment at 0:18 on YouTube or see the full interview on Leanpub.

Get "Rethinking Performance Engineering for Agentic AI"