Michael Gillett Online

Michael Gillett

Author | Head of Development | Windows Insider MVP

Feature Management with LaunchDarkly

Over the past few years, DevOps has become the de facto approach for designing, building, and delivering software. Feature management is now extending the DevOps methodology to allow applications to change on demand and run experiments to validate the success of new features. If you want to make feature management happen, LaunchDarkly is the tool for you.

This book explains how feature management is key to building modern software systems. Starting with the basics of LaunchDarkly and configuring simple feature flags to turn features on and off, you'll learn how simple functionality can be applied in more powerful ways with percentage-based rollouts, experimentation, and switches. You'll see how feature management can change the way teams work and how large projects, including migrations, are planned. Finally, you'll discover various uses of every part of the tool to gain mastery of LaunchDarkly. This includes tips and tricks for experimentation, identifying groups and segments of users, and investigating and debugging issues with specific users and feature flag evaluations.

By the end of the book, you'll have gained a comprehensive understanding of LaunchDarkly, along with knowledge of the adoption of trunk-based development workflows and methods, multi-variant testing, and managing infrastructure changes and migrations.

Order the book on Amazon >


Here are the major projects that I have worked on and you can try out right now

Microsoft Projects

I have worked on a number of Microsoft inspired projects, here are my favourite ones


A collection of wallpapers inspired by Microsoft, predominantly using the legendary Ninja Cat

Loading Animations

A collection of Microsoft inspired loading animations made using CSS

Windows 10 Progress

Microsoft plans for Windows 10 to be installed on over 1 billion devices within 2 to 3 years of its release, see how well it is progressing

Microsoft ❤ Hearts

Create your own version of "Windows ❤ Linux"

Build Bingo

Watch Microsoft Build 2018 and play along with the Bingo/Drinking Game

Guidelines Dev

An AngularJS and SASS framework for creating Windows 10 Web Apps using Project Westminster

Microsoft All Stars

A fun, 2 player card game inspired by Microsoft employees. To be enjoyed with you and your kin.

A new BSoD

Wouldn't it be great that if you get a Blue Screen of Death it was something a little more beautiful? Here's my idea for a Beautiful Screen of Death.