Agile serves as an umbrella for many types of implementation, of which Scrum is one, Randall says. Others include Kanban, extreme programming and DevOps.

Extreme programming takes customer feedback seriously—so seriously that an on-site customer is part of the team. You can think of this role as equivalent to scrum ‘s product owner role.

Sutherland: Sure. To put it very simply, agile is the larger set of values that can be applied to product development and management — or almost anything — and Scrum, extreme programming (XP ...

The Agile development model has spawned hundreds of books and dozens of conferences. There’s a significant track record of successful companies moving to Scrum, Extreme Programming (XP), and ...