Looking for recommendations on data append companies

Hi,

I bet I responded to that earlier post. The vendor you choose depends greatly on what you want to do.

• Appending Firms can vary by specialty and their real lead sources. Some firms do great at Org Charts (DiscoverOrg); scraping data off the web; doing direct phone verification, opting in; using DNB data to have single source of truth for Account/Company level detail and industry hierarchies....etc.
  • TechStack Firms may be good at scraping the web and other sources for visibility into kinds of solutions they have or need.
  • Research firms may be good at scraping and researching key Firm Lifecycle Events that may be relevant to a purchase of your services.
  • Verification or Contact firms will try to sell emails or phone numbers/direct dials and those have a variable success rate. Outside of the US, some of this practice is illegal, so be careful to know how their info is sourced.
  • Firms like TechTarget will help you look at intent data and buying teams to target Accounts more effectively with third party data.
• Firms like Lean Data and RingLead are more about process -- matching data, merging it properly, and helping Account level detail. They may leverage other firms (or your firm of choice) to normalize data.

If you happen to have a good data analyst on your team, then you can ask your suitors to send sample matching data against your real database to look at match %. I recall many folks here would do this with Data.com and get FAR less than Data.com advertised. Again, it really depends what you want to do with this data.