The technological advancement that enables the rapid production of complex 3D objects is called 3D printing. Also known as additive manufacturing, this process involves creating three-dimensional items by layering materials based on digital models. 3D printing technologies can utilize various materials, including plastics, metals, and ceramics, allowing for intricate designs and prototypes that were previously difficult or impossible to manufacture. This advancement has applications across numerous fields, including manufacturing, healthcare, and aerospace, significantly reducing production times and costs.