Learn how to use control groups to measure the effectiveness of your marketing efforts with precision. In this video, I’ll share practical examples from my time at Slack, Zendesk, and Salesforce, showing how control groups can help you evaluate ad campaigns, website changes, customer success initiatives, and more. Whether you’re a marketer, CEO, or VC, this simple yet powerful technique can save you money, improve decision-making, and provide definitive proof of ROI—all without expensive attr...
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