Data Pipelines are a series of data processing steps where the output of one step is the input to the next. Coursera's Data Pipelines skill catalogue teaches you how to design, build, and manage these processes for efficiently moving and transforming data from one system to another. You'll learn about different data pipeline architectures, the use of various tools and technologies such as SQL, Python, Apache Kafka, and Hadoop. You'll also understand how to handle real-time data processing, batch processing, data orchestration, and error handling within a pipeline. This skill is integral for roles like data engineers or data scientists, and anyone looking to manage large volumes of data effectively.