The goal of this RFP is to find a contractor who can perform an Advance Market Commitments (AMC) Baseline Study by collecting annual data from 2005-2008 at both the industry and country level. The data collected will then be used to develop and simulate two counterfactual for GAVIs AMC Initiative. The key findings from this study will serve to establish the vaccine environment prior to the AMC, as well as through the counterfactuals, help measure the impact of GAVIs AMC initiative since its inception.