Gareth Jones is an API architect for the Microsoft Graph. Previously he was the architect and designer for the OneNote API and before that, an architect in the Visual Studio Application Lifecycle Tools group, working on developer services and CodeLens. He is the inventor of T4 templating and co-creator of Microsoft DSL Tools. In days past, he’s worked on bespoke enterprise solutions, web services for small businesses before anyone actually used web services, and created the world’s largest touch screen application to simulate a container ship’s engine. He likes marmalade tabby cats a lot.