Black Friday has quickly become the biggest retail event of the year in the UK, and sales and marketing staff are busy preparing themselves for what can be a make or break week for businesses. What started as an American shopping tradition following Thanksgiving has spread in recent years to become a worldwide phenomenon, with shoppers holding out for Black Friday and Cyber Monday (the online shopping equivalent of Black Friday) to buy gifts ahead of the Christmas holiday season.

When it comes to website and search engine optimisation one of the first topics that comes up is page speed. In the case of SEO, for example, we know that Google looks at page speed when determining the ranking of pages in its search engine. There are many means of measuring page speed, but little is known about how Google themselves distinguish a slow loading page from a fast one.