Internal Server Error – an error on the server side that prevented the server from executing the request. Quite often this term is used in website development.
Http 403 Forbidden – Access denied, usually this means that the visitor has no rights to view the content. Quite often this term is used in website development.
Service Unavailable – the error when the server cannot process a request due to lack of connection. As a rule, the cause of this error is server overload or closing access to it. Quite often this term is used in site development.
E-commerce is a type of activity associated with the sale of various groups of goods on the Internet. This type of commerce combines online trading platforms, marketplace, aggregators, as well as online stores. The peculiarity of this type of activity is that the goods are sold and paid for online. Quite often this term is used in development of internet-shop.