Traffic Went from 30K to 15K Overnight - Help Please

One of my clients lost half of their organic traffic overnight on 04/07. I'm trying to figure out why. Any perspective is much appreciated.

Here's what I do know:

· No apparent fluctuations across algorithm trackers

· No drop in number of referring domains

· No drastic changes in keyword search volume

· Many pages are affected rather than one URL

· XML site map does not look broken

· No reported manual actions or security issues

· We've been their sole SEO provider for about 2...

Traffic Went from 30K to 15K Overnight - Help Please

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