Zalando is a giant clothing e-tailer with a massive EU customer base (12 billion EUR revenue in 2021) and something like every 5th package at my "packet pickup shop" is sent by Zalando (not for me though).
The EU is ~6% of the world's population. According to Wikipedia, they have 49 million users, which is ~10% of the EU.
So, again, I'm not sure why we should care about the internal stack preferences (which they explicitly say are partially incidental) of a regional e-commerce store.
Zalando is a giant clothing e-tailer with a massive EU customer base (12 billion EUR revenue in 2021) and something like every 5th package at my "packet pickup shop" is sent by Zalando (not for me though).