I was referred to this article by Seth Yates, and the bullet points covering the priorities of management execution struck me as being a nice focused summary:

• Do enough, no more (at least for this release!)
• Get it right, quickly – not necessarily the first time
• Build a firm foundation for growth
• Be able to add a steady stream of new features
• Delight your customers!
• Be better quality than anyone else (stability, ease of use, performance…)
• Scale gracefully

Of course trying to achieve these things in a competitive market is always going to be tricky. It does summarise how companies like Google execute well; get a Beta out, progressively update, scale and aim to be the best.