The phrase "to ensure a smooth transition" means to take steps or actions that will make a change from one state, situation or system to another as seamless and trouble-free as possible. Full definition
This will help ensure a smooth transition for your miles. (austravelpoints.com)
Establish legacy plans to help ensure a smooth transition of assets to beneficiaries. (usbank.com)
We provide assistance to ensure a smooth transition from online interaction to in - person date, even down to the logistics of where and when you're meeting. (idatingassistant.com)