Best selling albums are music records that have achieved high sales figures, often reaching millions of copies worldwide. These albums are typically measured by their sales in physical formats, digital downloads, and streaming equivalents. Notable examples include Michael Jackson's "Thriller" and The Beatles' "Abbey Road", which have both topped charts and set records for their impressive sales. The success of best selling albums can be attributed to various factors, including popular singles, strong marketing campaigns, and the artist's fan base. Many of these albums have become cultural landmarks, influencing music trends and inspiring future artists.