This document provides an introduction to impact analysis and strategic corporate citizenship. It discusses how impact refers to causal change that can be traced back to an intervention. Impact analysis can help prove and improve the impact of projects both internally and externally. Effective corporate citizenship benefits both companies and society by aligning business and social objectives through long-term synergies. The strategy house and citizenship cycle are tools to manage projects and portfolios with impact by understanding needs, developing strategies, implementing activities, analyzing results, and improving. PHINEO supports effective social engagement through knowledge sharing, partnerships, and impact orientation.