Leanpub Book LAUNCH 🚀 Architecture Synthesis: The Next Correct Step by Sergiy Yevtushenko
Architecture Synthesis derives where computation happens — deployment topology, data placement, consistency boundaries, recovery — from a system's service-level objectives, instead of choosing it from a catalog of styles. Derived, not chosen. Most architecture books are one of two kinds...
Welcome to the Leanpub Launch video for Architecture Synthesis: The Next Correct Step by Sergiy Yevtushenko!

About the Book

Architecture Synthesis derives where computation happens — deployment topology, data placement, consistency boundaries, recovery — from a system's service-level objectives, instead of choosing it from a catalog of styles. Derived, not chosen.
Most architecture books are one of two kinds: a catalog of styles and patterns you pick from and defend, or a physics of how replication, queues, and consensus actually behave. Neither tells you what to do on Monday. This is the missing third kind — a procedure.
The method runs on nine questions, translated into six architecture axes through a fixed set of rules, and closed with verification arithmetic: back-of-envelope capacity and availability math that checks a derived architecture against its own budget before anything is built. An architecture produced this way is never a one-time choice — it is re-derived whenever the answers change, on a greenfield system and on one you inherited, by the same procedure.
Part I builds the toolkit: an answer sheet whose questions each had to earn their seat, a ledger of what every architectural value provides and what it costs, the derivation procedure itself, and the verification gate. Small enough to apply from memory — a worksheet and a deck of reference cards.
Part II puts it on trial. The method re-derives one system on home ground, then derives four systems it does not control — Stack Overflow, Shopify, Discord, and a national companies registrar — blind, from their public commitments alone, with predictions registered in advance and graded in the open. The hits are shown. So are the misses, because a method that never fails is a parlor trick. The registered predictions, answer sheets, and grading rubrics are public in a replication kit, and counterexamples are invited.
A practicing architect can start here directly. A reader arriving from Process-First Design will recognize this as the next step.
Less art, more engineering — in the one decision that was still run on taste.
About the Author

Sergiy Yevtushenko is a Senior Software Architect with over 35 years of hands-on programming experience. Based in Poland, he specializes in building robust, high-performance backend systems using Java and Rust, with a particular focus on type safety and functional programming patterns that make invalid states unrepresentable.
He is the creator of Pragmatica Lite, a zero-dependency Java library providing monadic types (Result, Option, Promise) that eliminate null pointer exceptions and simplify asynchronous code. His technical writing on functional programming in Java has appeared on Medium and DEV Community, where articles like "Beautiful World of Monads" and "We Should Write Java Code Differently" have introduced thousands of developers to pragmatic functional approaches.
Sergiy's work bridges theory and practice - he believes that well-designed types and patterns can transform backend development from an error-prone craft into an engineered discipline. This book distills those insights into a practical methodology for modern Java development.
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