Nancy Nardin gave a presentation last week at the Apttus Accelerate Sales Event where she discussed the 'Sales Technology Stack Maturity Model' - a combination of 2 hierarchies used for assessing a sales stack and making decisions about new sales technology investments.The maturity model is an innovative concept for framing the challenge of picking the right digital sales aids for your sales process.Today's article explores the sales stack maturity model created by the team at Smart Selling Tools.