TensorFlow is an open-source library developed by the Google Brain team, primarily used for artificial intelligence and machine learning applications. It provides a flexible platform for building and training deep learning models, utilizing a dataflow graph structure where data, represented as multi-dimensional arrays called tensors, flows through various operations. TensorFlow supports multiple programming languages, with Python being the most common. Its extensive collection of functions and APIs enables developers to create complex neural networks for tasks such as image recognition, natural language processing, and more. TensorFlow is widely recognized for its scalability and efficiency in handling large datasets.