El Segundo-based iRise, a provider of application simulation tools for the web market, said today that it has signed on SunTrust, a commercial bank as a customer for its products. SunTrust is using iRise's web application software to validate its user requirements for customer-facing web applications. iRise provides software which allows customers to simulate application logic and web-based applications before full implementation. iRise is backed by B Cubed Ventures and Morgan Stanley.