Are there any other projects?

In addition to blackfriday-deals.at, the Zrotz brothers also operate other couponing platforms such as preispirat.ch, Switzerland's largest bargain, deal and voucher site with over 200,000 visits per month (as of September 2018).
These various projects with high visitor peaks represent a major challenge for the technical infrastructure.

How were the platforms technically operated before?

Both projects, blackfriday-deals.at and preispirat.ch, were started on a shared Hoststar hosting. With the rapidly increasing number of visitors to the Wordpress based platforms, the performance of a shared hosting solution was soon no longer sufficient. The first performance problems were emerging around Black Friday and Cyber Monday 2017, although the platforms had already been split between several shared hostings on different servers at that time. Since other customers also use the same server for shared hosting, this led to small crashes of both platforms when the load was high.
A new solution had to be found for Black Friday and Cyber Monday 2018, which also included a backup scenario, as an increase in the number of visitors was expected.