It was a long time ago and I wasn't as involved with this, so I don't know with certainty what was used and how. We had multiple channels for major product vers

It was a long time ago and I wasn't as involved with this, so I don't know with certainty what was used and how. We had multiple channels for major product versions + beta customers on the most recent one. On top of these we could stage different CDN regions. There were different types of data you could update and those might have been treated differently (e.g. simple file signatures vs definitions for heuristics).