Testing Shiny applications with Shinytest - Shiny developers now have tools for automated testing of complete applications [video] http://bit.ly/2AauJUq
Understanding PCA using Shiny and Stack Overflow data Julia Silge [video] http://bit.ly/2QLmG5K
Developing and deploying large scale Shiny applications Herman Sontrop [video] http://bit.ly/2QT8rMx
R Markdown and knitr make it easy to intermingle code and text to generate compelling reports and presentations that are never out of date. [video] http://bit.ly/2A9MH9E