Watching or listening to content over the internet without downloading it first. Like turning on a radio or TV - the content plays immediately.
Netflix streaming lets you watch movies instantly without waiting to download the entire file to your device.
Streaming is a general delivery method (sending audio/video in small chunks for immediate playback), not a single cloud service. Cloud providers offer building blocks for streaming workflows—CDNs, media packaging/transcoding, and real-time data streaming services—but the term itself is broader than any one product.