In some cases, it can be extremely interesting to be able to override a configuration dynamically. One of the first use cases immediately noticeable is in the case of a site factory with a set of shared and deployed features, and therefore identical configurations shared.
As we say in terms of computer programming, only two things are extremely complex: naming variables and invalidating the cache. Drupal 8 has an automatic caching system activated by default that is truly revolutionary, which makes it possible to offer a cache for anonymous visitors and especially for authenticated users without any configuration. This cache system is based on three basic concepts:
May 2, 2018 Google has announced a major policy change regarding the use of its online services, including its popular mapping service Google Maps and all its associated APIs, to embed or generate location-based information. This policy change now pays for a service that was previously available for free under some relatively generous quota limits starting June 11, 2018. Please read this post for full details on this policy change and its implications.
Drupal Commerce 2 allows to define out of the box multiple checkout flows, allowing to customize according to the order, the product purchased, the customer profile this buying process and modify it accordingly. This is an extremely interesting feature, in that it can simplify as much as necessary this famous checkout flows. Do you sell physical (and therefore with associated delivery) and digital (without delivery) products? In a few clicks you can have two separate checkout flows that will take into account these specificities.
It is not uncommon when a multilingual Drupal 8 project is implemented, that the pages translations are not ready at the time of production. If making a Drupal 8 multilingual site has become really easy to implement, there is now a fundamental difference with Drupal 7: it is impossible to disable a language. Either install a language, or delete it. This change is assumed, and voluntary, so as to not generate unnecessary complexity for questionable gain.