We recently helped implement a Japanese translation for a client’s site - which was a pretty sizable challenge! The site was already broken down by country, but all the countries were in English. We ran into some unexpected challenges and wanted to break down how we overcame them.
Managing Drupal sites with composer brings a number of benefits. However, when installing Drupal dependencies from source (an option offered by composer), you also lose the functionality provided by Drupal core’s “Available Updates” page. Thankfully Composer will allow you to keep tabs on the available updates for all of your project’s dependencies, including Drupal core/contrib.