[Lambda] Intuitive developer experience for web applications with multi-region support

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**Description**
Developers building HTTP-based serverless applications need a streamlined developer experience for modern web frameworks with streaming support (including server-sent events) and low latency.

This feature enables developers to easily build HTTP-based web applications with native multi-region experience.

Non sono specificati file del repository, test o punti di ingresso. Inizia chiarendo le integrazioni previste con i framework web, il comportamento di streaming e server-sent event, gli obiettivi di latenza e il modello multi-regione. I criteri di completamento dovrebbero specificare un workflow definito per gli sviluppatori e il supporto convalidato per questi scenari.

Scritto dal modello di indicizzazione a partire dal testo della issue.