Deep trade agreements (DTAs) cover not just trade but additional policy areas, such as the international flows of investment and labor, and the protection of intellectual property rights and the environment. Their goal is integration beyond trade, or deep integration. DTA rules influence how countries transact, invest, work, and, ultimately, develop. The rules and commitments in DTAs should be informed by evidence and shaped by development priorities rather than international power or domestic politics. An impediment to this goal is that data and analysis on trade agreements have not captured the new dimensions of integration. Little effort has been made to identify the content and consequences of DTAs. This Handbook takes a step towards filling this gap in our understanding of international economic law and policy. It presents detailed data and analysis on the content of the policy areas most frequently covered in DTAs, focusing on the stated objectives, substantive commitments, and other aspects such as transparency, procedures, and enforcement. Each chapter, authored by lead experts in their respective fields, explains in detail the methodology used to collect the information and provides a first look at the evidence by policy area.