I am currently studying Streaming SSR and have a few questions about my understanding of how it works in Next.js.

Here’s my current understanding:
Initially, Streaming SSR wasn't supported in Next.js because it used renderToString internally. With renderToString, the entire HTML content is rendered in one go, and Suspense doesn’t get triggered, preventing partial or progressive loading.

To address this, Next.js introduced renderToPipeableStream in the App Router, enabling Streaming SSR. This way, we don’t need to wait for all server-side tasks to complete before content starts rendering. Is this understanding correct?

If there are any misunderstandings in my explanation, could you explain in more detail? I’m eager to gain a solid understanding of this topic.

Thank you!