The document discusses how Google's core updates have impacted digital marketing. It notes that Google makes daily changes to its search algorithms to improve the user experience. It states that content is very important, and if an update causes a site to decline in search rankings, the content needs to be strengthened. The document also explains that Google's BERT update aims to better understand user intent, and as a result some websites may lose traffic if Google does not see them as a direct match for a user's query. It concludes by providing contact information for Vision51, including their office address and operating hours.