Telling Google what pages to serve up for specific markets and languages is an area that has really come on in recent years. There are also a few “gotchas” which I have come across while working with Lionbridge and reviewing the international presence of clients.
The first approach is to use ccTLDs, this means using a .co.uk for targeting the UK, .fr for targeting France etc. This is a useful approach but when trying to market globally there is one major thing to be aware of – that approach is market specific. If you want to target German speakers in Austria or Switzerland then using a .de domain is not the best approach.