A company needs a document signing capability to complete its solution. Three vendors offer it, none of the company's customers ask who provides it, and it is not related to the company's distinctive competency. What does the framework suggest?

• ABuild it, since owning the whole stack gives full control.
• BBuild it, because the engineers are already employed so it costs nothing extra.
• CLeave the gap, since customers have not complained about it.
• DBuy or partner, since the component is necessary and undifferentiated, and every week spent building a commodity is a week not spent on the part nobody else can build.