Intersourcing is a human resources and accounting service designed to offer a complete suite of administration and management utilities ranging from payroll and taxes, to recruiting and scheduling. It utilizes the software UltiPro. The country-specific Intersourcing domains are where users go to access UltiPro services.
Ultimate Software, the developer of UltiPro, runs and maintains the various Intersourcing domains for clients across 160 countries. The company was founded in 1990. It is publicly traded on the Nasdaq stock market under the name ULTI. Ultimate Software's total revenue for 2014 was $505 million. Its headquarters is based in Weston, Florida, with corporate offices in Toronto, Ontario.