In recent years, developments in continuous casting and hot rolling have been dominated by the demands of high quality and reduced costs. Improving component reliability and properly maintaining the product net shape in benders, zones, and segments is critical to achieve these goals. This paper focuses on modified roll designs and base material enhancements that combat the extreme operational environments within any mill. Additionally, roll life can be significantly increased through the use of engineered overlays. By targeting roll erosion, corrosion, wear, and thermal fatigue we can also define and detail the variations of overlay materials, process controls, and technologies developed for all types of continuous casting machines.