The document discusses the 4Q model, which is a design-to-cost and design-to-value framework used by Telekom for product development. It categorizes development into four phases (Q1-Q4) to speed up time-to-market. Q1 focuses on developing minimal viable products through fast prototyping. Q2 implements products in small test markets. Q3 makes minor platform changes with low risk. Q4 quickly implements customer feedback. The 4Q model guides investments along the product lifecycle to optimize costs while delivering customer value.