Which metric is often used to measure the effectiveness of SEO efforts?

Search engine ranking is a key metric used to measure the effectiveness of SEO efforts because it directly indicates how well a website is performing in search engine results pages (SERPs). When a site ranks higher for targeted keywords, it typically receives more organic traffic, leading to increased visibility and potential customer engagement.

Monitoring search engine rankings helps businesses understand the impact of their SEO strategies, such as keyword optimization, content quality, and link-building efforts. If a website's ranking improves over time, it demonstrates that the SEO tactics in place are successfully boosting the site's authority and relevance to search engines.

While social media likes, conversion rates from advertisements, and email open rates are important metrics for assessing other marketing strategies, they do not provide a direct measure of SEO effectiveness. In contrast, search engine ranking specifically gauges how well a site is optimized for search engines, making it the most relevant metric for assessing SEO performance.