AUTHOR BIO Ola Ellnestam is a coach and mentor for both business and technical teams. He loves to combine technology, people and business. He has developed complex computer systems within health care, defense, and on-line banking. He knows that software must be easy to use, extend, and deploy in order to be worth developing. More than anything else, he likes to share his discoveries and knowledge with others because he believes that this is how new knowledge and insight is created. Daniel Brolund is a software developer that always sees things to improve-to the joy and grief of his fellow workers. He has successfully worked with global web sites deployed on hundreds of servers, desktop applications for just a few users, and on-line gaming applications, just to mention a few.