international data group, inc. (idg) is a massachusetts registered and headquartered media, events and research company focused on the tech landscape. founded in 1964 by patrick joseph mcgovern in newtonville, massachusetts, the organization is made up of international data corporation (idc) and idg communications, which includes the cio, computerworld, pcworld, macworld, infoworld, and javaworld brands. serving technology decision-makers and enthusiasts in 147 countries, idg was bought by china oceanwide in 2017 while maintaining u.s. based leadership.