Gavi, the Vaccine Alliance, through co-financing, supports low-and-middle-income countries (LMICs) to implement immunization programs. In alignment with the Immunization Agenda 2030 goal of leaving no child behind in accessing immunization services, the Gavi 5.0/5.1 strategy (2021-2026) has integrated its various support mechanisms (such as Equity Accelerated Funding (EAF), Health System Strengthening (HSS), Targeted Country Assistance (TCA), New Vaccine Introduction (NVI), Cold Chain Equipment and Optimization Platform (CCEOP)) into a comprehensive portfolio. Therefore, countries requesting Gavi’s support are expected to undergo strategic Full Portfolio Planning (FPP) to achieve the ambitious IA 2030 goal.