Dynamic Distribution Groups vs Nested Distribution Groups

I was onsite with a customer recently troubleshooting a mail routing issue when an email message was sent to a large distribution group (150,000+ members) which had many nested groups. After we resolved the issue, a conversation was started about converting this large distribution group into a dynamic distribution group (DDG). Admittedly, I had very limited experience with DDGs. I decided to engage some of my peers at Microsoft who had experience deploying and supporting DDGs for customers of va... [More]