The BEST-AC Longitudinal Impact Assessment (LIA) is a five-year evaluation. The overall objective of the LIA is to evaluate BEST AC’s (Phase II) progress against its goal to achieve a business enabling environment that is more conducive to private sector growth. In particular, it will assess whether and to what extent PSO advocacy, supported by BEST AC, has resulted in improvements in the business-enabling environment and increased jobs and incomes by influencing policy or regulatory changes.