Over the past few decades, the space industry has seen a profound transformation, leading to a redefinition of the business models of companies in the space sector. Among the various emerging technologies, photonics represents one of the largest fields of expansion, transforming sectors such as telecommunications, defense, navigation, remote sensing, and Earth and space observation. At the forefront of this technological transformation is integrated microwave photonics (MWP), a state-of-the-art solution that offers wide input bandwidth, management of high-frequency operations, and efficient distribution of radio frequency (RF) signals through Radio-over-Fiber (RoF) systems. These advantages, combined with inherent protection against electromagnetic interference (EMI) and low size weight and power consumption (SWaP), are a critical advantage in improving the performance of synthetic aperture radar (SAR) systems. This paper provides a brief introduction to microwave photonics for space applications, highlighting, through ongoing projects at our research laboratory, how it is gaining traction in the global market.