 SAN FRANCISCO--BUSINESS WIRE--Upwork NASDAQ: UPWK, the worlds work marketplace that connects businesses with independent talent, today announced that the company has been selected as a Market Leader in the 2021 Digital Staffing Marketplaces Technology Advisor report from notable contingent workforce management, talent management, and staffing analyst firm Ardent Partners. According to the report: Utilization of digital and on-demand staffing technology solutions has increased more than 70 