Eugene Yan's overview of RecSys 2021 condenses the conference into a practical checklist for people building recommender systems. The single source emphasizes starting with simple baselines before reaching for sophisticated approaches, a theme that runs through many of the highlighted papers and talks.
The write-up organizes concrete ideas, tech stacks, and open-source packages so readers can test methods directly. Because there is only one source, there are no differing viewpoints to compare; it is best treated as a curated entry point into the conference's practitioner-relevant work.