In a nutshell, R Markdown stands on the shoulders of knitr and Pandoc. The former executes the computer code embedded in Markdown, and converts R Markdown to Markdown. The latter renders Markdown to the output format you want (such as PDF, HTML, Word, and so on).Read more.
The techniques and tools covered in R Markdown: The Definitive Guide are most similar to the requirements found in Data Scientist job advertisements.
