Sonoma Partners | 4,206 followers on LinkedIn. *Sonoma Partners was acquired by EY on March 16, 2018* Chicago-based Sonoma Partners provides technology and business process consulting to enterprise and mid-sized firms. With a focus on salesforce.com and Microsoft Dynamics CRM, we provide our customers with a choice of top CRM platforms and custom mobile applications. Founded in 2001, we have completed over 500 projects with expertise in working with professional services firms.