AWS has not been able to match the growth of Amazon’s competitors, with Microsoft Corp.’s Azure and Alphabet Inc.’s Google Cloud seeing cloud-related revenue rise by 31% and 30%, respectively. Even so, AWS remains much bigger than any other cloud infrastructure provider, and it’s notable that those peers also missed expectations this week.

Amazon.com topped Wall Street estimates for quarterly revenue on Thursday, as strong sales over the holiday shopping season boosted its retail business, helping offset weakness in the cloud computing unit.

Amazon shares lost ground in extended trading on Thursday after the tech giant reported cloud computing revenue below expectations and issued a tepid current quarter outlook. Monitor these key post-earnings chart levels.