This publication offers initial guidance to companies interested in starting, expanding, or evaluating a peacebuilding portfolio across conflict settings, sectors, and peace and development mechanisms. It presents key findings and lessons learned from business engagement in peace in South Sudan, Somaliland, Myanmar, the Democratic Republic of Congo, and Denmark. Its main audience is decision makers in foreign firms working in fragile/conflict settings who wish to ‚do no harm or go even further and make peace contributions, and policymakers and practitioners who wish to support these aims.