Chapter 4 of the book Assessment Strategies in Technical Services, edited by Kimberly A. Edwards and Michelle Leonard. This chapter focuses on the main area of assessment for continuing resources: conducting a serials review. The majority of the chapter is given over to describing the process for undertaking large-scale collection review projects. The focus on serials includes journals, periodicals, standing orders, newspapers, and microfilm subscriptions; it omits databases, streaming resources, and other aggregated online research content. Special consideration is given to the review of large packages of e-journals—typically referred to as “Big Deals.”