Using ESG Rating and Ranking services helps companies meet regulatory requirements and stakeholder expectations. It also gives companies an increased chance of access to capital and a competitive advantage in the ESG investing space. While only eligible S&P DJI companies are included in the ESG indices, Sustainalytics and MSCI are voluntary rating systems that companies can partner with to receive evaluations and scores. Read this article for a comparison of these ESG rating assurance organizations, including their methodologies and rating processes.