The PPF charts your x-inefficiency, or the 'opportunity costs'
of what you're doing versus what you could be doing. It's a useful guide to
where your marketing is best focussed.
The 'frontier', the curve here, represents the limits to profit: it's the
maximum productivity of your company if all resources were doing what they
do best at maximum efficiency. A company on line a has high x-inefficiency:
it's spending a lot of time doing stuff it's not cut out for. A company on
line c is very focussed but prone to being sideswiped; it can't do much
else. The best bet for most companies is line b, where x-inefficiency
is reasonable but the business can adapt to changing conditions.
Keeping your business on the b-line is a goal of marketing: your marketing
programme should align with what your business does best. Next on to 08: the McKinsey matrix.