[1] Born in 1971 in Freising, Germany, to a family of "4th-generation carpenters," Diez had grown up around carpentry and cabinetmaking, which influenced his design.

After spending a year working in Mumbai and Poona, India,[3] Diez returned to Germany in 1996.

He matriculated at the State Academy of Fine Arts Stuttgart, where he earned a Bachelor's of Industrial Design in 2002 while studying under the likes of Richard Sapper.

Diez won the 2024 Comapasso d'Oro for his Costume modular sofa for Magis.

"[1] In fact, his AYNO lamp, designed for Midgard, received the 2021 German Sustainability Award.