This is a big deal for headless WordPress. I'm already using something that handles this on my site now, but something supported and maintained by a company like Automattic is significant.
![](https://res.cloudinary.com/dzfhknihi/images/f_auto,q_auto/v1694738565/vip-block-data-api-animation-1660/vip-block-data-api-animation-1660.gif?_i=AA)
https://lobby.vip.wordpress.com/2023/04/17/new-in-beta-block-data-api/