Gainsight has raised $20 million in a Series B round of funding led by Bain Capital Ventures. Existing investor Battery Ventures and new investor Summit Partners also participated in this round. Gainsight is a customer success enterprise company that enables customer-driven companies proactively manage retention and reduce unexpected churn. The Gainsight platform uses big data analytics to evaluate sales data, usage logs, support tickets, and other customer intelligence to offer users with actionable insights and recommended best practices. Gainsight’s software can be integrated with leading CRM systems including Salesforce.com, Oracle Sales Cloud, Netsuite, Microsoft Dynamics CRM, SalesLogix, and Siebel.