Why is it important for business strategy to drive organizational strategy and Information Systems strategy?

Why is it important for business strategy to drive organizational strategy and  Information Systems strategy? What might happen if the business strategy was not the driver?  

Please make your posts are substantive. A substantive post will do at least TWO of the following:

Ask an interesting, thoughtful question pertaining to the topic

Answer a question (in detail) posted by another student or the instructor

Provide extensive additional information on the topic

Explain, define, or analyze the topic in detail

Share an applicable personal experience

Provide an outside source (for example, an article from the UC Library) that applies to the topic, along with additional information about the topic or the source (please cite properly in APA)

Make an argument concerning the topic.

At least one scholarly source should be used in the initial discussion thread. Use proper citations and references in your post.