The required server hardware is mostly dependent on the number of articles available in your shop and on the expected traffic (visitors per day). The requirements are covered by most hosting providers and certified hosters should be able to provide a suitable configuration.
Please note that the values here are to be seen as an absolute minimum. As soon as you have a high number of items in the store or a high traffic is expected and the store has to process many requests at the same time, it is strongly recommended to increase the server resources.
The requirements listed above represent the recommended setup to install Shopware. Generally, the operation is also possible on similar setups (Mac OS, nginx, MariaDB etc.). However, please take into account that we cannot provide official support for setting up such server systems and setups. The setup of alternative server systems with all necessary requirements is the responsibility of the respective hosting partner.