Today we continue our Conversion Optimisation series with my sparring partner Zack Franklin. He will be going in-depth on using Google Tag Manager. Which is a free tool that allows you manage and deploy marketing tags (snippets of code or tracking pixels) on your website (or mobile app) without having to modify the code. I'll be showing how we took page load times from 11.5 seconds and insight rating of 25 and 2 (Mobile & Desktop) to 1.5 seconds and insights rating of 95. If 100ms of latency costs Amazon 1% in sales then you know why super fast landing pages matter.