The Rise of “Compose Sites”: How Modern Web Development is Moving Beyond Static Pages

The phrase “compose sites” sits at an exciting crossroads in modern software development and digital design. Far from just meaning a basic website creation tool, “compose sites” encapsulates a paradigm shift: building, assembling, and deploying web experiences through component-driven architecture, declarative frameworks (like JetBrains’ Compose Multiplatform for Web), and AI-assisted layout composition (such as specialized tools embedded in modern site builders).

Whether you are an application engineer deploying cross-platform apps directly to a browser, a designer utilizing conversational AI to “compose” bespoke layouts, or a content creator curating modular blocks, composing sites has fundamentally transformed how the web is built.

1. What Does “Composing” a Site Mean Today?

Traditionally, building a website meant writing raw HTML and CSS from scratch, or wrestling with monolithic content management systems (CMS) that felt restrictive.

The modern concept of composing a site borrows heavily from software engineering principles. Instead of treating a web page as a single, static document, a “composed site” is an assembly of independent, reactive, and reusable UI components.

• Declarative UI Frameworks: Developers describe what the UI should look like based on current state, rather than manually manipulating Document Object Models (DOM).
• Modular Design Systems: Teams build component libraries (buttons, cards, data grids, navigation bars) and “compose” them together to form complex web applications seamlessly.
• No-Code & AI Composition: Non-technical creators describe a vision in plain text, letting generative tools compose context-aware styling, custom code snippets, and structural layouts on the fly.

2. The Technological Drivers Behind Compose Sites

Several major technological movements have propelled the “compose sites” philosophy to the forefront of web development.

A. Compose Multiplatform for Web

One of the most powerful interpretations of the term belongs to the Kotlin ecosystem. Compose Multiplatform for Web allows developers to take their declarative UI code—originally designed for Android or desktop applications—and compile it directly for the web (often via WebAssembly or modern rendering pipelines).

• Zero JavaScript Fatigue: Developers can stay entirely within Kotlin, leveraging Gradle build systems without getting bogged down by complex JavaScript toolchains.
• Instant Previews & Sharing: Teams can share live app previews, internal dashboards, and design system components instantly via a simple web link, bypassing app stores or heavy compilation steps.

B. AI-Driven Design Composition

In the mainstream website-building space, “compose” is increasingly tied to generative augmentation. Rather than dragging and dropping static templates, modern site creators feature generative design companions (like Squarespace’s Compose tool).

These tools understand the live context of an existing website. By typing a prompt like, “Compose a high-converting hero section with an overlapping testimonial card and a subtle hover shadow,” the system writes, previews, and injects the necessary structural elements safely into the page.

3. Why Developers and Creators Are Making the Switch

The shift toward composed sites offers distinct advantages over legacy methods:

| Traditional Web Design | Composed Sites Approach |
| :— | :— |
| Monolithic Code: Pages are tightly coupled, making redesigns tedious. | Modular Blocks: Update a single component, and it cascades across the platform. |
| Siloed Platforms: Separate codebases needed for mobile apps and web wrappers. | Code Reuse: A single shared codebase powers desktop, mobile, and browser targets. |
| Static Previews: Stakeholders rely on flat mockups or cumbersome staging builds. | Live Iteration: Real, interactive application states can be reviewed instantly in any browser. |

4. The Future of Web Composition

As WebAssembly matures, AI integration deepens, and component frameworks become more universal, the line separating a “desktop application,” a “mobile app,” and a “website” will continue to blur.

Composing a site will no longer mean manually aligning pixels or writing repetitive boilerplate code. Instead, it will be an intuitive act of orchestration—stitching together robust code components, prompting intelligent layout generators, and deploying rich, native-feeling experiences directly to the global browser ecosystem with a single click.