Planet population synthesis models predict an abundance of planets with semi-major axes between 1-10 au. At such distances, they lie at the edge of the detection limits of most planet finding techniques. Discovering these planets and studying their distribution is critical for understanding the physical processes that drive planet formation. ROME/REA is a gravitational microlensing project whose main science driver is to discover exoplanets in the cold outer regions of planetary systems. To achieve this, it uses a novel approach combining a multi-band photometric monitoring survey with reactive follow-up observations, exploiting the unique capabilities of the Las Cumbres Observatory (LCO) global network of robotic telescopes combined with a Target and Observation Manager (TOM) system. I will present the main science objectives and a technical overview of the project, including initial results.