Exascale refers to computing systems capable of performing at least one exaflop, or one quintillion (10^18) calculations per second. This level of performance is significant for scientific research, weather forecasting, and complex simulations, enabling breakthroughs in various fields such as medicine and climate science. Achieving exascale computing involves advancements in hardware, software, and energy efficiency. Countries like the United States and China are investing heavily in exascale projects to maintain leadership in technology and address global challenges. The development of exascale systems is expected to revolutionize how we process and analyze vast amounts of data.