One of the biggest mistakes in a lift-and-shift cloud migration is moving everything over without thinking about how it fits in the cloud. Just copying things “as-is” can lead to higher costs and slower performance. It’s also easy to overlook how different systems depend on each other—so after the move, some things might stop working. If you’re migrating something like an IP PBX, you’ll want to double-check network settings, call quality, and security, since even small delays can affect voice performance. The key is to plan carefully, test in stages, and not rush the process.