The term "seedbox" generally refers to a cloud-based tool. In other words, you pay to rent a physical or virtual server in a data center. However, you can make your own by simply building or purchasing a dedicated computer, loading it with the right software, and connecting it to a very fast network connection. In practice, however, almost very few people do this. Most people want to use a cloud-based seedbox as it is more cost and time-effective to just pay a monthly subscription fee and get all the benefits of it without all the hassle.