MONTEGO BAY, Jamaica — Airbnb is betting on emerging markets as it charts an expansion strategy that looks at how the home-sharing company can help boost sustainable tourism and community development.

On Wednesday at the Global Conference on Jobs and Inclusive Growth: Partnerships for Sustainable Tourism, Airbnb launched a new report and roadmap for advancing sustainable tourism through home sharing. The report looks at several cases studies of partnerships that Airbnb has piloted in the past few years to help get new homeowners onto the platform and train local communities.

Airbnb expects that by 2030, 400 million Airbnb guests will have stayed in developing countries and that there will be more than 28 million hosts.