Since the beginning of the year, several people have remarked to me off the cuff, apropos of nothing in particular: "Google Cloud is killing it." Parent company Alphabet reported Q2 earnings [PDF] after the bell on Wednesday and the numbers speak for themselves. Let's go to the tape:Google Cloud revenue was up 82 percent from the same quarter last year, increasing from $13.6 billion to $24.8 billion.Google Cloud operating income more than tripled during the same period, going from $2.8 billion t