Search Engine Optimization (SEO) is vital for every website that wants free traffic from search engines (which is pretty much all sites!). If you haven't yet, you should check out Drupal Search Engine Optimization, Ben Finklea, Packt Publishing, as it covers the basics. In this section, we'll look at some multilingual and international SEO tips and how to configure the most common SEO modules for a multilingual Drupal 7 site. If you are looking for more modules, check out kristen.org/drupal-seo-modules.
Multilingual SEO addresses multilingual sites. International SEO assumes that our site will have users in more than one country. These are parallel concerns as our site can cater to multiple languages and one country or to multiple countries and one language.
The following are a few things to consider when dealing with multilingual and international SEO:
The same SEO principles generally apply regardless of language/country
Evaluate all SEO requirements...