VSS, a private investment firm investing in the healthcare, business services, education and information industries, completed the investment in Ambulatory Management Solutions, a turnkey provider of outpatient anesthesia, surgical and administrative services. Financial terms were not disclosed. "Our investment in AMS illustrates VSS' approach to structuring transactions, typically preserving significant equity ownership for our management partners while ensuring low leverage. At the same time, this approach provides our portfolio companies with the needed financial flexibility to pursue growth opportunities," Jeffrey Stevenson, VSS Managing Partner.