<https://www.conversion-uplift.co.uk/glossary-of-conversion-marketing/iterative-testing/#primaryimage>
<http://schema.org/contentUrl>
<https://www.conversion-uplift.co.uk/wp-content/uploads/2017/02/Test-and-Learn-Process-Chart.png>
<https://www.conversion-uplift.co.uk/glossary-of-conversion-marketing/iterative-testing/>