The document discusses objectives for learning about server operating systems including different types of server OS, features to consider when choosing one, and an overview of leading vendors like Windows Server 2016. It defines servers as computers that process and deliver data to other computers over networks. Server OS are designed specifically for servers to interface between users and applications/systems and help manage large amounts of data 24/7 with networking, security, backups and other features. Factors to consider for a server OS include administration, security, features, performance, hardware requirements and scalability.