Shortly after this update, Google released another to improve the
speed of their indexing, called Caffeine.
As Search Engine Journal reported at the time, Caffeine was “a
next-generation search architecture for Google that’s supposed to
be faster and more accurate, providing better, more relevant results
and crawling larger parts of the web.”
Speaking of speed, in 2010 Google announced that site speed was
a ranking factor.
20 YEARS OF SEO: A BRIEF HISTORY OF SEARCH ENGINE OPTIMIZATION