The advantage of Ansoff's matrix is that it doesn't just lay out potential strategies for growth, it also forces managers to think about the expected risks of moving in a certain direction
One disadvantage of the matrix is that it fails to show that market development and diversification strategies also tend to require significant change in the day-to-day workings of the company
Diversification doesn't have to be completely unrelated to what the business does currently, it might be a safe option to diversify by moving into your supplier's business, as you know there's a guaranteed market for that product
KFC's expansion from the USA market to the UK market
KFC began operating in the USA in 1952 and extended their market by opening an outlet in Preston, UK in 1965, the first American fast food chain to open in the UK
There are now over 750 outlets across the UK and Ireland, run as a franchise by an independent company, KFC GB Ltd, until it was bought by PepsiCo in 1986