The document discusses five real-world examples of organizations that improved their project management maturity through incremental improvements. The first example discusses a municipal agency that improved from a maturity level of 1.4 to 2.6 in one year. The second example involves a mining company that streamlined processes, reducing efforts by 50% and improving from a level of 2.5 to 3.6. The third example discusses a telecommunications company that increased its win rate and contract values while investing less than 10% of its budget. The last two examples outline maturity improvements and process overhauls at additional organizations.