👉 The import fluid, often referred to as the "import stream" or "import pipe," is a powerful mechanism in Apache Beam that allows for the efficient and flexible processing of data streams by enabling the combination of multiple input sources into a single, unified stream. This is achieved through a series of operations that can filter, transform, and merge data from various sources like files, databases, or even other streams. The import fluid is particularly useful for building complex data processing pipelines that require the integration of diverse data inputs, making it a cornerstone in the design and implementation of scalable and efficient data processing solutions.