Auvenir is a cloud-based client engagement platform, optimizing engagement experiences using modern technology. Trusted by large accounting firms and national associations, it's been used in over 50,000 successful client engagements across 90 countries. For custom solutions and more, visit www.auvenir.com. Auvenir is a cloud-based client engagement platform, optimizing engagement experiences using modern technology. Trusted by large accounting firms and national associations, it's been used in over 50,000 successful client engagements across 90 countries. For custom solutions and more, visit www.auvenir.com.