Interesting discussion. I also want to share with you interesting and useful information. How many of you have ever heard of Call-Tracking. Many companies use this tool to increase marketing profitability. I recently came across this and I want to recommend you a useful article https://callgear.com/blog/call-tracking-is-the-right-tool-to-evaluate-online-campaign-performance-listen-up-digital-marketing
-agencies /, which details this tool and its result. So anyone interested can read this article. There is a lot of information that you will need.