Inaccuracy - IP addresses can be highly inaccurate. You might mistarget a user and force redirect him to an irrelevant part of your website.
Incomplete index - Googlebot crawls from an IP address located in California, so it only sees the version specific to the United States
Multiple Countries - A language can be used in multiple countries. Which country do you choose?
Multiple Languages - A country can have more than one official language. Which language do you choose?
Slow – Additional redirects increase the time users have to bulgaria mobile database wait before gaining full access to your website.
That is why we recommend that you ask your users, when they first visit your website, to select their country of residence andor their preferred language and then set cookies accordingly.
URL Structure: ccTLDs and Subdomains, Subfolders and Parameters
It is important to establish a URL structure that not only makes sense from a human perspective, but is also logical and therefore easy for crawlers to understand.
You have several options here, each with its own pros and cons.
For example: On one hand there are search engines that prefer country specific domains. On the other hand there is your development team who are probably looking for the most convenient way of doing things, so they prefer using subfolders.