This document discusses open data and its evolution. It begins by explaining why open data matters and how to implement it effectively through examples like the SARPAM project. While open data has promising benefits, evidence of its impact remains largely anecdotal. The document outlines how open data is evolving from Open Data 1.0's focus on releasing as much data as possible to Open Data 2.0's emphasis on high-quality, relevant data and linking it to solve real problems. Overall, the document advocates for using open data to empower people and unleash its full potential to create public value.