This training introduces core principles of Conversion Rate Optimization (CRO), emphasizing the importance of disciplined testing through A/B and multivariate testing, forming strong hypotheses based on triangulated data, and aligning test variations with meaningful business goals like increased clicks or conversions. Jo reminds CSPers that quick early wins are vital in optimization retainers, that CRO doesn’t need to be intimidating for curious minds, and that understanding testing mechanics—like statistical significance, traffic volume, and test duration—is key to meaningful results.