Metrics and statistics, such as keyword ranking, organic traffic, click-through rate (CTR), and returning visitors, are essential to monitoring progress. But also, when improving your SEO strategy, the changes will seem evident as you will start noticing visible changes like receiving more traffic and even conversions on your website or your preferred t-shirt-selling site. So combine both and make a list of what's been working or what could be improved to build the perfect strategy for your online business.