This is correct from my understanding, and glossing over the article and links is precisely what they're talking about.

Pipeline of taking data from one system, transforming it and loading it into another. There is a whole industry full of software products that facilitate this such as MuleSoft. It is referred to as ETL

I was surprised to see your succinct correct answer greyed out.

Thanks for your explanation.

Maybe the greyed out was because just resolving the acronym is not very helpful if from the words it's not clear what that is. Like in this case.