Numpy is a powerful library in Python that is widely used for numerical computing. It provides support for large, multi-dimensional arrays and matrices, along with a collection of mathematical functions to operate on these data structures. This makes it an essential tool for data analysis, scientific computing, and machine learning. One of the key features of Numpy is its ability to perform operations on entire arrays without the need for explicit loops, which enhances performance and simplifies code. Additionally, it integrates well with other libraries like Pandas and Matplotlib, making it a fundamental component of the Python data science ecosystem.