When using Agile Earned Value Management (EVM), progress should be measured at which level?

An agile team is struggling with an issue. A team member mentions that another team had a similar issue that was resolved, but lessons learned documents are unavailable. What should the agile practitioner do?

Test-Driven Development (TDD) is a rapid cycle of:

There is a debate within the organization on whether projects need to be agile or waterfall. Some agile terms and principles are understood differently by the key stakeholders and this delays the decision-making process. How should the scrum master proceed?

Who is responsible for maximizing the value of the product?