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Go fast and don't break things

Korneliusz philosophizes about how software can be developed fast, without breaking it.

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Two distinct smartphones share one checked eligibility badge while keeping their own screens.

Share Mobile Business Logic Without Rebuilding Both Apps

Learn how to pilot Kotlin Multiplatform for duplicated iOS and Android rules, keep native releases intact, and measure whether sharing pays off.

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A discounted first purchase fills one shopping bag, but a second bag remains empty, illustrating that first-order conversion does not prove repeat purchasing.

A Conversion Test Can Win the First Order and Lose the Customer

Learn how to measure first purchases, reorders and contribution without mistaking an acquisition offer’s early conversion lift for a long-term win.

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A hand lifts an improved audit report while a separate webpage still shows an hourglass, illustrating that a higher Lighthouse score alone does not prove visitors got a faster site.

A Better Lighthouse Score Is Not Proof Your Marketing Site Got Faster

Learn how to separate Lighthouse scoring changes from visitor-speed gains using comparable lab tests, real-user data and CMS page templates.

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A magnifying glass examines a small telemetry badge beside a closed, locked customer folder.

How to Debug AI Agents Without Access to Customer Documents

Learn how to diagnose failures in confidential AI workflows using minimal telemetry, customer-approved review and reproducible evaluations.

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A hand patches one tear in a jacket while its pocket remains untouched, illustrating a targeted update that preserves other data.

PATCH Must Say What Changed: Designing Partial Updates Without Data Loss

Learn how to define PATCH intent for omitted, zero and cleared fields, then test that contract from HTTP request through storage.

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A hand opens a dropdown selector beside a stopwatch, showing that a reusable control needs an interaction-time budget.

React Design Systems Need Interaction Budgets, Not Just Reusable Components

Learn to test React design-system controls against real product journeys, diagnose slow interactions and fix bottlenecks without replacing the whole kit.

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A magnifying glass examines a closed factory loading door while a finished parcel waits outside, illustrating an audit of the route to production.

AI Writes Code Faster. Audit the Path to Production Before Buying More Seats

Learn how to trace AI-assisted changes from request to production, identify the real delivery constraint, and decide where to invest next.

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A hand moves a selected-test clipboard toward a phone, emphasizing test selection before expanding device capacity.

Fix Mobile Test Selection Before Expanding Your Device Farm

Learn how to select mobile release tests, reproduce failures, and decide when more physical devices will improve coverage.

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A hand stops a product box from entering a launch doorway, representing a valuable test result that prevents a harmful rollout.

Stop Counting A/B Test Wins. Audit What Your Experiments Teach You

Learn how to audit experiments by customer problem, measurement quality and the decisions they change—not test count or win rate.

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