This document provides templates and guidance for conducting an Intra-Action Review (IAR) on a country's COVID-19 response. The IAR is intended to be a qualitative review of the response to identify best practices, gaps, and lessons learned to improve ongoing and future responses. It involves stakeholders analyzing the response and identifying strengths, challenges, and recommendations. The review follows several steps, including an overview of the response plan and timeline, identifying what went well/less well and why, and developing activities to address challenges and institutionalize best practices to strengthen the COVID-19 response. The goal is to support continuous learning and improvement during public health emergencies.