Alpine SG (ASG), a portfolio company of private equity firm Alpine Investors, which buys and builds vertical SaaS companies, recently announced another acquisition: Sierra Interactive. The latter is a proptech firm that manages lead generation for real estate companies.

"This year marks our 16th in business," Sierra Founder, Ben Peskoe, was quoted in a press release. We have grown steadily throughout that time, but over the past five years our growth has accelerated. With that growth, we began to get a real sense of the huge opportunities in front of us — as well as the challenges that would come along with them."

ASG doesn't integrate offerings from acquisitions into a single product platform as many software companies do. Instead, backed by Alpine Investors, it is a general software-as-a-service, or SaaS, company. ASG claims to operate more than 45 businesses in eight different verticals, including finance, HR, legal technology, and engineering, that it has acquired over time. The integration, as it were, would come through operations. By providing software delivery systems and business processes and mechanisms to enable the SaaS companies to operate more efficiently, reducing overall costs.