In my experience, these can get some use, but if you're doing a serious volume of enterprise sales they are mainly through other means. In particular:
* Outbound cold calls and emails (annoying and boring but it works once you nail the pitch)
* Ad campaigns leading to targeted landing pages (i.e. How MegaBank saved $50M on Ledger Compliance using FooTech -- fill out this form to download whitepaper, and also we'll call you)
* Content marketing (now that you've learned about X, see how X would work in your organization)