Amazon shares, which declined in extended trading after the earnings report, slid further during an earnings call with CEO Andy Jassy.

For the first time, Microsoft disclosed a dollar figure for its Azure cloud business.

Amazon announced new business from the likes of PepsiCo during the second quarter, as revenue topped $30 billion.

Amazon shares, which declined in extended trading after the earnings report, slid further during an earnings call with CEO Andy Jassy.

Revenue expansion in Amazon Web Services underwhelmed investors, who probed Amazon CEO Andy Jassy on why its cloud rivals are growing at faster rates.