gTLD (Generic Top-Level Domain)

Country-code TLDs carry a geographic signal that you cannot turn off: .de tells Google the site is for Germany, and that targeting applies whether or not you want it. Generic TLDs carry no such signal, which is why every multi-market business ends up on one.

The complication is a category Google calls generic ccTLDs: technically country codes, but used so widely outside their country that Google treats them as generic. .io (British Indian Ocean Territory), .co (Colombia), .ai (Anguilla) and .me (Montenegro) are the common ones. If you are on one of these, you are effectively on a gTLD — but the list is Google's and it changes, so it is worth confirming rather than assuming.

No, and this has been stated repeatedly by Google since the new extensions launched in 2014: .app, .shop and .dev have no ranking advantage or disadvantage against .com. There is no hidden penalty and no hidden boost.

What does differ is user behaviour, and it differs in ways that are hard to measure but real. People still type .com by default, so a .co domain loses some direct traffic to its .com neighbour. Some audiences read an unfamiliar extension as less established. And a handful of extensions have acquired a spam association through heavy abuse, which affects how a link from them is perceived rather than how your own site ranks.

The practical reading: the extension is a branding and trust decision, not an SEO one.

There are three structures and the choice is mostly about how separate the markets really are.

One gTLD with subdirectories — example.com/de/, example.com/fr/ — keeps all authority on one domain and is the default recommendation. Every link earned anywhere benefits every market.

One gTLD with subdomains — de.example.com — is operationally easier if the markets are run by separate teams on separate infrastructure, but a subdomain may be treated as a separate site, so authority does not necessarily flow.

Separate ccTLDs — example.de, example.fr — gives the strongest per-country signal and the strongest local trust, at the cost of building authority from zero in every market. It makes sense when the markets are genuinely separate businesses with separate legal entities, and rarely otherwise.

Whichever you pick, hreflang has to connect the versions, or they compete instead of complementing each other.