Scaling is one of the most important skill for any brand to master. Let's breakdown the most effective way to scale a business by focusing on the 3 most important metrics for business growth. Often marketers use terms like MER or ROAS, but those are very low integrity vanity metrics. Most importantly, PSM helps a brand focus on how to invest in their growth, rather than chase what their marketing team mistakenly places value in... ROAS or MER.