This chapter presents an updated perspective on the tectonic and geological evolution of the Philippine archipelago, showing the complex interactions between the Philippine Sea Plate and the Eurasian Plate. We summarize the formation of critical geological structures, including the Philippine Mobile Belt, the Palawan Continental Block, and major trench systems such as the Manila, Philippine, and Cotabato Trenches, which arise from ongoing plate convergence and subduction processes. In particular, we propose the tectonomagmatic activity within the Taiwan-Luzon Arc, where sediment input and geochemical factors shape arc volcanism. Isotopic evidence highlights the diversity of magmatic sources in this region. Using Global Navigation Satellite System (GNSS) data and earthquake observations, we analyze strain accumulation and fault activity in Luzon. The Philippine Fault System is critical in accommodating regional deformation and generating seismic hazards. Finally, we review seismic monitoring efforts in the Philippines and Taiwan, emphasizing the value of enhanced networks with new stations in Luzon. Collaborative initiatives between Taiwan and the Philippines are essential for improving earthquake and tsunami hazard assessment and mitigation strategies in this seismically active region.