The first part covers the period from 2004 to 2006 when Sidd was working with a startup based out of Singapore. He explains how we moved from doing ad-hoc development to adopting Scrum. Adopting Scrum was a big improvement over our previous ad-hoc approach but Scrum also led them to make some classic mistakes (from a lean point of view).
The second part covers the period from 2007 to 2009 when Sidd started his own company in India. The company was started with Scrum right from the beginning. He explains how we evolved from vanilla Scrum to Lean and Kanban.