Clients might not fail to connect. That's even worse. They connect and the server hangs and returns no response (perhaps due to bad configuration changes). Now

Clients might not fail to connect. That's even worse. They connect and the server hangs and returns no response (perhaps due to bad configuration changes). Now you're stuck, and your server is too oversaturated to SSH in and fix it. It out depends on your application and users. Building a website? Probably not much of an issue. Building a low-latency API? YMMV. Keeping your load evenly balanced across your front end cluster also can keep your cost low, since you are able to distribute load more evenly. That's another point: if you scale your cluster size up and down frequently to accommodate load, doing that with DNS is a nightmare.