Cross Country Consulting / Carta / EisnerAmper / Deloitte playbooks. 2026 standard: 18-24 months pre-IPO start. Five dimensions: financial systems (ERP + close automation), governance + board, internal controls + audit-ready, human capital + comp disclosure (8-category SEC requirement), MD&A drafting + risk factors. Comp analysis via PitchBook + S&P Capital IQ + recent S-1s on SEC EDGAR.