Part IV covers the realization phase of the project: everything it takes to turn a design into a working, deployed, high-performance system. The realization phase involves development (of software, backend integrations, grammars, and audio recordings), testing of all components before release for pilots and deployment, and tuning the performance of the system during pilots and in early deployment.
Entire books could be written about each of these steps. Given our focus on design, our goals in this part of the book are twofold:
Covering in detail those steps that are often designers' direct responsibility (e.g., voice coaching and grammar development)
Covering all other steps in sufficient detail ...