Annual Defect Report 2026Download
The Last Mile

A series by Charles Sword

The Last Mile

Agents now write the code and the tests. This series is about what that means for mobile: how to design the last mile of testing, where the app meets a real device, and how to give coding agents defect reports they can act on.

Chapter 1, The End of QA, is open to read now. Chapters 2 through 5 are coming soon. Subscribe to get each full chapter as it publishes.

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The series

  1. Cover image for The End of QA, chapter 1 of The Last Mile
    Chapter 1Read now

    The End of QA

    Agents are erasing the line between writing software and testing it. Whether that works depends on one thing: how much of what testing reports is true. On mobile, that answer has to come from a physical device.

    Read the chapter →

  2. Chapter 2Coming soon

    The reference architecture

    What the mobile testing stack looks like when agents own it, layer by layer, and what happens to the Appium and Maestro tier.

  3. Chapter 3Coming soon

    The last mile, measured

    People, device farms and robots compared on cost, speed, hardware coverage and false positives.

  4. Chapter 4Coming soon

    Defect reports for machine readers

    What a report has to contain when its first reader is a coding agent and not a person.

  5. Chapter 5Coming soon

    The quality architect

    The roles, team shape and metrics for governing quality against throughput in a software factory.