Go live Definition 1 of 2Pro Tip 1/3Project Milestone Used to mark a significant stage in a technical project or system deployment. Our system upgrade will go live after final testing. Pro Tip 2/3User Readiness Implies that users should be prepared for the change or new features. Make sure training is complete before we go live. Pro Tip 3/3Technical Issues May indicate potential for bugs or problems that need immediate attention. If any issues arise when we go live, report them ASAP.