Jupyter Notebook is an open-source web application that enables users to create and share documents containing live code, equations, visualizations, and narrative text. It supports various programming languages, including Python, R, and Julia, making it a versatile tool for data analysis, machine learning, and scientific computing. The interactive environment allows for an iterative workflow, where users can execute code in real-time and visualize results immediately. Jupyter Notebooks are widely used in academia and industry for data cleaning, transformation, and statistical modeling, providing an accessible platform for both beginners and experienced developers alike.