This article presents research on archaeological data creation and management practices at two excavations in Europe in order to gain a better understanding of how to align these practices with the data reuse needs of a broader research community. The Secret Life of Data project follows the life cycle of data from the field to the digital repository to better understand opportunities and challenges in data interpretation, publication, and preservation. Our “Slow Data” approach focuses not on maximizing the speed and quantity of data but, rather, on emphasizing curation, contextualization, communication, and broader understanding. Through a mixed-methods approach of interviews, field observations, and excavation data assessments, we recommended changes (both technical and organizational) to improve data creation and management practices. We report our findings and offer readers guidance on streamlining data collection for reuse during excavation.