The frontend of the application will be developed using R. There are three options for installing R to complete the tutorial:

1. If you have installed Microsoft R from Chapter 3, The Analytics Toolkit, and will be using your local machine for the tutorial, no further installation is necessary.
2. Alternatively, if you will be using the Packt Data Science Virtualbox VM, no further installation will be needed.
3. If you plan to install R from the official R website, the binary can be downloaded from any of the download sites (mirrors) listed at https://cran.r-project.org/mirrors.html: