<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Marketing Efficiency on HeyLoopy: Build Expertise. The #1 AI-powered training platform.</title><link>https://heyloopy.com/categories/marketing-efficiency/</link><description>Recent content in Marketing Efficiency on HeyLoopy: Build Expertise. The #1 AI-powered training platform.</description><generator>Hugo</generator><language>en-us</language><lastBuildDate>Thu, 02 Apr 2026 08:09:24 -0400</lastBuildDate><atom:link href="https://heyloopy.com/categories/marketing-efficiency/index.xml" rel="self" type="application/rss+xml"/><item><title>What is Customer Acquisition Cost (CAC)?</title><link>https://heyloopy.com/learning/glossary/what-is-customer-acquisition-cost-cac/</link><pubDate>Sun, 07 Sep 2025 00:00:00 +0000</pubDate><guid>https://heyloopy.com/learning/glossary/what-is-customer-acquisition-cost-cac/</guid><description>This article explains Customer Acquisition Cost for managers, highlighting its calculation, its relationship with lifetime value, and its practical application in making informed, low stress business decisions.</description></item></channel></rss>