Technical signals help your website become more crawlable and indexable. The more technical signals you send, the easier it becomes for search engines to identify your targeted countries and languages.
We mentioned hreflang tags before in the optimized part of the fundamentals of international SEO. To refresh your memory, an Hreflang tag works by optimizing your URL to help specify the language you want to target. By now, you also know that tools like flang Hreflang can help you generate these tags.
X Default Tag
xDefault tag is beneficial when you do not have the required language version of your user’s website, but you want to direct them to your preferred version.
Meta-Content Language Tags
Meta-content language tags help search engines identify your HTML content’s language, however, they are not as specific nor as customizable as hreflang tags.
Using Schema Markup
As mentioned in chapter 4, How to Rank: A Blueprint, schema helps search engines identify useful information for users. You can use schema as a technical signal for international SEO also.
You may use the Google Tag Manager to use schema as a technical signal. Since it is also a ranking factor for Google, it also works in optimizing your website.
Let us move on to geotargeting.