The Island Architecture is a term that describes an architectural approach where very fine-grained areas of an otherwise server-side or statically pre-rendered page is dynamically enhanced upon interaction or other type of events.

Source: https://twitter.com/Steve8708/status/1481056596901908482

References

• https://www.patterns.dev/posts/islands-architecture
• Astro Islands
• Islands & Server Components & Resumability, Oh My! - Blog post byRyan Carniato