Agentic AI has opened up the possibility to build at lightning speed, while giving us agents that can handle uncertainty along the way. In this presentation we will show you how we built Xebia Axis (grounded in real implementation, not just theory) and how we use its agentic properties to migrate a legacy DWH to a new modern platform live on stage, describing the process behind it. Our approach consists of two steps: first, the readiness module creates an inventory of what is there and highlights difficulties ahead of the migration; next, the migration module takes that inventory and uses specialized agents to convert the code.