help me answer this questions in a concise manner and please don$$t use AI$.$

$-$ How can a business$-$level strategy of $($a$)$ low cost and $($b$)$ differentiation offer some protection against competitive forces in a company$$s industry?

$-$ What is required to transform a business$-$level strategy from an idea into reality?

$-$ What do we mean by the term value innovation? Can you identify a company not

discussed in the text that has established a strong competitive position through value innovation?