This guide outlines the compliance preparation process for the Cybersecurity Maturity Model Certification (CMMC) 2.0 as mandated by the Department of Defense (DoD). It details the anticipated regulatory scenarios and timelines for the Defense Industrial Base (DIB) and Managed Services Providers (MSPs). The document specifies that the CMMC rule is expected to be included in government contracts by Q1 of 2025, with a compliance timeframe of 12 to 18 months for businesses. It describes two potential scenarios: the proposed rule and the interim final rule, including the implications of each on compliance timelines. The guide emphasizes the importance of presenting accurate information in compliance reports and the potential consequences of non-compliance, including civil penalties. Additionally, it highlights the necessity for organizations to begin preparations immediately to meet the upcoming deadlines and to consider flow-down requirements that may complicate the compliance process.