This report identifies well-established sectors needing transformation or improvement (tourism, agro-processing, and garments), along with evolving sectors with high potential for growth (electronics and digital trade) as Southeast Asian countries hammer out policies to boost post-COVID-19 recovery and secure a greener future. The first in a four-part series, the report looks at the pandemic's impact on these five sectors across Cambodia, Indonesia, Myanmar, the Philippines and Thailand. It identifies reforms and strategies to help core industries recover and grow over the medium term. This report underscores how deepening regional cooperation can help policy makers boost their countries' COVID-19 recovery and build more resilient economies and societies.