دانلود کتاب هنر سئو، ویرایش چهارم

Search has become integrated into the fabric of our society. More than 7.5 billion Google searches are performed per day, which equates to more than 85,000 queries per second. In addition, users have grown to expect that the responses to their search queries will be returned in less than one second. Further, 53% of all website traffic across the web comes from organic (nonpaid) search, which means that for many businesses, SEO is the most important digital marketing investment.