This document discusses integrating VuFind with different library systems and discovery layers to create a combined search experience. Key points include: 1. Configuring VuFind to search the catalog, discovery layer (EDS), and subject guides simultaneously through the "Combined Search" feature. 2. Customizing the Combined Search results page by redirecting URLs, adding labels, and fixing CSS issues. 3. Integrating the Summon API to include database recommendations and best bets in the Combined Search results. 4. Plans to expand the combined search to include additional discovery tools like the CONTENTdm API and publication finder API.