Activities that are coherent and build on top of each other are greater than the parts.
If an activity is distracting or not helping the other activities, it is a separate business and a differentiat.
In episode seven of Intercom on Product, Des Traynor and Paul Adams discuss 6 key ingredients for product strategy and aligning this with company strategy. Click here to read the Michael Porter paper, What Is Strategymentioned in the episode.