TL;DR:
CSDM 5 provides a standardised blueprint for organising ServiceNow data across seven interconnected domains. Like a well-planned city, it connects business strategy to technology delivery to customer value. The phased adoption approach (Foundation → Crawl → Walk → Run → Fly) ensures practical implementation, whilst the three core service types enable proper incident management, impact analysis, and strategic alignment. Organisations report 40-60% faster implementations and 30-50% reduction in MTTR.