This brief, part of a series of research briefs presenting findings from a multi-case study, focuses on what we learned about the relationship between the two sets of measures and implications for how they can be used together to better understand how to support quality in ECE centers. The multi-case study helped us develop draft measures and explore how well they summarize implementation, estimate costs, and identify ways centers can achieve quality. The multi-case study included 30 ECE centers, 25 of which completed both implementation and cost data collection. (author abstract)