Amazon shares jumped after AWS recorded its fastest growth in 18 quarters, strengthening CEO Andy Jassy’s argument that corporate AI adoption is still in its early stages; Microsoft’s record $450 billion market-value gain offered further evidence that Wall Street will reward costly AI expansion when revenue follows

Cloud sales boom as company ramps up data center buildout

Microsoft's $41 billion AI investment boosts Azure growth, beats earnings estimates and lifts investor confidence as cloud demand continues to rise.