The Social Investment Agency (SIA) is a New Zealand government agency focused on improving social outcomes through data-driven investment strategies. It sets standards for social investment, advises on data infrastructure, collaborates with agencies, and reviews social sector spending[2][4]. The SIA targets vulnerable populations by working with NGOs and iwi providers[1][5]. Its unique selling proposition is using evidence-based approaches to optimize social spending and achieve better long-term outcomes[3][5]. The agency's services include cross-sector advice, insights, and tools to enhance decision-making for improved wellbeing[4].