ZoomInfo ZoomInfo (formerly known as DiscoverOrg) is a company that develops a go-to-market (GTM ) platform. | Ziff Davis Ziff Davis (formerly known as J2 Global) is a digital media and internet company that specializes in technology, entertainment, shopping, health, cybersecurity, and martech. | ![]() International Data Group International Data Group (IDG) is a company providing a market intelligence and demand generation platform for the technology ecosystem. | ||
Founding Date | Founding Date 2007 | Founding Date 2005 | Founding Date 1995 | Founding Date 1964 |
Type | Type Public | Type Private | Type Public | Type Private |
Tags | ||||
Locations | Locations Vancouver, US HQ | Locations New York, US HQ Singapore, SG London, GB | Locations Needham, US HQ | |
Employees | Employees 3,508 | Employees 3742% increase | Employees 3,80010% decrease | Employees 3,300 |
Valuation ($) | Valuation ($) 3.9 b | Valuation ($) N/A | Valuation ($) 2.1 b | Valuation ($) N/A |
Financial | ||||
Revenue (est.) | Revenue (est.) $1.2b (FY, 2025) | Revenue (est.) $119.5m (Y, 2021) | Revenue (est.) $1.5b (FY, 2025) | Revenue (est.) $1b (Y, 2020) |
Net income | Net income $124.2m (FY, 2025) | Net income N/A | Net income $47.4m (FY, 2025) | Net income N/A |

Madison Logic is a company developing account-based marketing (ABM) solutions.
View companyZiff Davis (formerly known as J2 Global) is a digital media and internet company that specializes in technology, entertainment, shopping, health, cybersecurity, and martech.
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International Data Group (IDG) is a company providing a market intelligence and demand generation platform for the technology ecosystem.
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