It always amazes me to see how much the marketing world has changed in the 20 years I've been in it. Everything was so different then; we spent millions of dollars in advertising through channels that could never provide us with a proper report, let alone a reliable return on investment.
https://www.forbes.com/sites/forbesagencycouncil/2017/09/15/how-to-choose-the-right-marketing-automation-tool-for-your-agency/#324b92594744/