Rebecca Wirfs-Brock, president of Wirfs-Brock Associates, is an internationally recognized leader in the development of object design methodologies. Although best known as a software design guru and creator of Responsibility-Driven Design and the xDD meme, Rebecca is also an innovator of techniques for simply expressing complex requirements and effectively designing and communicating software architecture. She is active in the agile community, championing bringing the right balance of design and architecture into agile projects. She frequently helps product engineering, IT, and startups with the technical bits, as well as with effective teamwork and agile design and architecture practices.