Area Code is a component that organizes code with the aim of optimising query processes. Only code that is defined in a specific Area Code is fetched in a given situation. This helps, for example, to optimise REST queries. What is rendered is not the entire HTML, but only what is absolutely necessary to answer a REST query.
The support for PHP 5.6 ends by the end of 2018. A while ago, Magento announced that Magento 1 is still going to be supported (more information here: https://magento.com/blog/magento-news/ongoing-magento-1-support). If […]