This paper will discuss how collection development and selection principles together with model workflows, having chiefly evolved and been applied in a print environment, are being adapted to and integrated in the lightly explored territories of electronic, non-book and other relevant content. The paper will consider the current and historical context of collection development as it confronts non-print formats and new models of librarian-driven, academic-driven, and patron/researcher-driven collection building. Research and examples from Australia, Asia, the United Kingdom and the United States will be critically examined and used to illustrate approaches to this adaptation and integration. Many academic and scholarly librarians have done an excellent job of imposing collection development discipline to their print collections. This discipline is largely informed by what is considered relevant combined with what is considered affordable. Professional collection development is an exercise that is not easily measured or reduced to a metric. It is the considered application of a body of expertise confined within a methodology. Successful methodologies, such as profiles and approval plans, are well-known in Australia and throughout the world, and have been described and evaluated exhaustively in the literature. However, librarians often struggle with the integration of e-books, journals, subscriptions, AV material, RSS feeds, and other content within these traditional, and still useful, structures.