Prince Harry and American actress Meghan Markle tied the knot at Windsor Castle on Saturday during a ceremony that began at noon, London time, which was 7 a.m. EDT across the pond and 4 a.m. on the West Coast. While many of us in the U.S. slept or started our days in other ways, millions of our fellow citizens and hundreds of millions around the world tuned in to the extensive TV coverage of the royal wedding. Those watching via British broadcaster Sky News' livestream didn't have to rack their brains to identify famous wedding guests, thanks to Amazon.com's Here's what you should know. Who's that woman whose spaceship-sized hat could inspire War of the Worlds II?

Prince Harry and American actress Meghan Markle tied the knot at Windsor Castle on Saturday during a ceremony that began at noon, London time, which was 7 a.m. EDT across the pond and 4 a.m. on the West Coast. While many of us in the U.S. slept or started our days in other ways, millions of our fellow citizens and hundreds of millions around the world tuned in to the extensive TV coverage of the royal wedding. Those watching via British broadcaster Sky News' livestream didn't have to rack their brains to identify famous wedding guests, thanks to Amazon.com's Here's what you should know. Who's that woman whose spaceship-sized hat could inspire War of the Worlds II?

If you've ever watched a royal wedding, you've doubt asked yourself questions like "Who is wearing that hat?' or "Who is talking with Prince William?" To help viewers answer those questions, Sky News in the U.K., Amazon Web Services and AWS partners GrayMeta and UI Centric are rolling out a new feature to help onlookers identify guests as they enter St. George's Chapel in Windsor for Prince Harry and Meghan Markle's May 19 nuptials. Accessible in the Sky News app or via skynews.com, the "Royal Wedding: Who's Who Live" function will allow viewers to select a guest during the live stream, and the feature will identify and provide background on that person. "Who's Who Live" is enabled by Amazon Rekognition, a cloud-based image analysis software that uses machine learning/artificial intelligence technology. "Sky continuously searches for ways to innovate and bring better coverage to its customers.