Anthony, Stephen K. The Serials Librarian, 55(01-02), pp. 235 - 253. As they seek new roles in the digital realm, libraries are finding it increasingly difficult to manage the complexity of technology implementation while continuing to cost-effectively meet their mandates as information providers. Many organizations find themselves dealing with legacy, isolated, duplicated and ineffective information systems. The practices of enterprise architecture and service oriented architecture hold much promise as methodologies to reduce complexity, to encourage and enable collaborations, and finally to rein in the beast of technology. Even libraries under budgetary constraints can benefit from knowledge of enterprise architecture and service oriented architecture best practices.