Quantized Field Theory (QFT) is a framework in physics that combines classical field theory with quantum mechanics. It describes how particles, such as electrons and photons, interact through fields that permeate space. In QFT, particles are seen as excitations or "quanta" of these underlying fields, allowing for a more comprehensive understanding of fundamental forces. One of the key achievements of QFT is the development of the Standard Model, which explains the electromagnetic, weak, and strong nuclear forces. QFT has also led to significant advancements in particle physics, enabling predictions and discoveries of various particles, including the Higgs boson.