Opting for AUTO_SHRINK in Azure SQL Database or any SQL Server database utilizing SSD storage isn’t the best move, and here’s why:

• Performance Takes a Hit: Picture AUTO_SHRINK getting busy shrinking database files whenever it spots some free space. This activity puts a strain on the I/O system, potentially slowing things down, especially when everyone’s trying to access the database at once. Sure, SSDs zip through read/write operations quicker than old-school HDDs, so you might not feel the pinch right away. However, over time, this could drag your database’s performance down a notch.
• Hello, Fragmentation: Ever try to piece together a puzzle where the pieces don’t quite fit? That’s what happens when databases shrink—indexes and data get all jumbled up. To smooth things out, you’ll find yourself constantly rebuilding or reorganizing indexes, which is a bit of a hassle. SSDs are better at dealing with this mess due to their speedy access times, but still, it’s an efficiency killer.
• The Shrink-Grow Dance: Databases naturally get bigger as they gobble up more data. If you’re always shrinking them down only to watch them grow back, it’s like taking one step forward and two steps back. It makes more sense to give your database some breathing room to expand without constantly adjusting its size.
• Microsoft’s Two Cents: Microsoft itself suggests steering clear of AUTO_SHRINK, pointing out that it’s not the best for your database’s health. They recommend keeping an eye on your database’s size and disk space and stepping in manually when you need to tweak things.
• Thinking About SSDs: Modern SSDs are tough cookies, built to endure a ton of write operations. But that doesn’t mean you should give them extra work for no good reason. Regularly shrinking and expanding database files could wear them out faster than necessary.

So, while SSDs might soften some of the blows from AUTO_SHRINK, it’s wise to pass on this feature to keep your databases running smoothly and efficiently. A little foresight in capacity planning and sticking to routine maintenance can go a long way.