Fiber-reinforced polymer (FRP) reinforcement technology is a pivotal development in the field of structural engineering, particularly in improving the durability and load-bearing capacity of deteriorating infrastructure. The use of FRP materials as external reinforcement offers significant advantages, including high tensile strength, corrosion resistance, and lightweight properties, making them ideal for retrofitting aging structures and extending their service life. The correct application of FRP reinforcement requires a careful consideration of various factors, such as the selection of fiber types, resin systems, and bonding techniques. Engineers must evaluate the specific needs of the structure, such as the level of damage, load conditions, and environmental factors, to determine the most suitable FRP solution. This decision-making process is supported by advanced simulation tools, which help in predicting the performance of FRP-reinforced systems under different stress conditions. These tools are essential for optimizing structural behavior and ensuring long-term durability. The implementation of FRP systems is typically accompanied by both in situ and laboratory testing to verify their effectiveness. Moreover, techniques such as load testing, adhesion strength tests, and environmental exposure assessments are employed to validate the performance of FRP in real-world applications. As the demand for sustainable and resilient infrastructure grows, the integration of FRP reinforcement into both new and existing structures plays a critical role in enhancing overall safety and functionality.