The Computer Systems Services Group (TSS) of the Technical Services Department (TSD) provides an infrastructure of database servers, World Wide Web servers, and applications. This infrastructure supports the business, administrative, and technology needs of TSD and its staff and serves as a resource to other APL departments. By applying data administration and programming skills, Computer Systems Services staff have integrated the pieces - Web and application programming, Web server administration, and database administration - to provide customers with customized data systems and access to information residing in various databases. This article describes TSD's database and Web server infrastructure and highlights a number of applications developed by the Department in support of its customers.