"Necessary cookies" are cookies that are technically necessary so that basic functions of the website can be used (e.g. login).
"Setting cookies" are cookies that store information about users' settings or preferences and influence how the website looks or behaves (e.g. preferred language, region, set sorts/filters in a table).
"Statistic cookies" are cookies for recording how visitors use the website and which end devices they use in order to design the website in line with requirements (e.g. content alignment with particularly frequently clicked topics, optimization of the page display on end devices used). The evaluation is anonymous or pseudonymous, i.e. without linking the data with e.g. name, e-mail or address.