In late fall 2020, it was clear that winter in the Netherlands, like much of Europe, would give way to months of resurging COVID-19 infections. To keep the economy open, employer demands for rapid testing were increasing and so the Dutch government mandated a foundation to organize such facilities nationwide. This foundation needed a partner to host, manage, and continuously deploy improvements on an application processing these rapid test results. And an unprecedented challenge: this environment had to be ready within two weeks to meet the target opening for the first COVID mass testing pavilion.