This document is an insights brief that outlines critical information regarding the Cybersecurity Maturity Model Certification (CMMC) 2.0 for defense contractors. It emphasizes the urgency for contractors to prepare for the rapid implementation of CMMC requirements in solicitations, which will occur sooner than anticipated. The brief details five key insights that every contractor must understand, including the importance of accurately scoping Controlled Unclassified Information (CUI), the necessity for documentation maturity, and the constraints posed by the availability of authorized assessment organizations (C3PAOs). Additionally, it discusses the implications of CMMC on various organizational functions, urging leadership to treat compliance as an operational investment. The document also provides a practical 90-day plan for achieving or maintaining Level 2 readiness, which includes steps for scoping, remediation, and engaging with C3PAOs. Overall, the brief serves as a guide for contractors to navigate the complexities of CMMC compliance effectively.