R Markdown is a file format for making dynamic documents with R. An R Markdown document is written in markdown (an easy-to-write plain text format) and contains chunks of embedded R code. These R code chunks can be executed when the document is rendered, and their output (including tables, plots, and other results) is automatically inserted into the final document. This allows for creating reproducible reports, presentations, and interactive documents where the analysis and its results are tightly integrated. R Markdown documents can be converted into various output formats, including HTML, PDF, Word documents, and presentations. This makes it a versatile tool for communicating data analysis results to a wide audience. The combination of markdown's simplicity and R's powerful statistical capabilities makes R Markdown a popular choice for data scientists, researchers, and analysts.