Islands architecture
We implement an islands architecture: the page is served as fast static HTML, and only the necessary areas that genuinely need JavaScript are made interactive ('islands'). To load minimal JS and keep high speed. Honestly upfront: islands is great for content-heavy, mostly-static sites with pointed interactivity (blogs, marketing, e-commerce storefronts) but NOT for highly interactive apps where almost every part is interactive (there the gain is small); the approach is newer and nicher (fewer specialists, ties to specific frameworks); and by itself it does not guarantee speed without a sound implementation. We apply islands where it genuinely wins.
Islands architecture — overview

An islands architecture is an approach where the page is mostly static HTML, and interactivity is added by isolated 'islands' — small components that hydrate (get JS) independently and only where needed (search, cart, form, widget). The rest of the page stays light statics without extra JS. The goal is to sharply reduce the amount of loaded and executed JavaScript and speed up loading/interactivity. Honestly about 'for mostly-static sites', this is key: islands gives the maximum gain when the page is mostly static and there are few interactive zones (a blog with comments, a landing with a form, a storefront with a filter). Then you load JS only for the islands, not for the whole page. But for highly interactive apps where almost every part is interactive (complex dashboards, editors, SPA-like interfaces), there will be so many islands that the advantage disappears — there another approach is more appropriate. We will honestly assess whether islands suits your site type. Honestly about novelty and being niche: islands is a relatively new approach, closely tied to specific frameworks (Astro and the like). There are fewer specialists, the ecosystem is younger, and you partly lock into the chosen tool. This must be accounted for. Honestly about 'no speed guarantee': the architecture itself helps load less JS, but the final speed depends on the implementation (what was moved to islands, component size, optimization). A poor islands implementation will eat the gain. The technology is a possibility, not an automatic result. Honestly about the effect: for content sites with pointed interactivity it gives less JS and higher speed, but it is not a universal solution. Honestly about access: a suitable site type, a framework, a team are needed. An important boundary: this is islands; partial hydration (the mechanism) — 1058; server components — 1054; SSG/Jamstack — 1051/1050. Picture this: instead of 'loading heavy JS for the whole page for a couple of widgets' — light statics with interactive islands where it fits. The base price starts from 60,000 ₽ (depends on the number of islands).
Problems we solve
- Heavy JS is loaded for the page though only a couple of zones are interactive.
- A content site is slow due to excessive JavaScript.
- You want islands but it is unclear whether the site type suits.
- A highly interactive app is being built on islands — no gain.
What's included in the Islands architecture service
- Implementing islands (static HTML + isolated interactive islands)
- An honest assessment: does islands suit your site type
- Moving interactivity into islands with independent hydration
- Accounting for novelty/niche status and framework lock
- Honest boundaries (for mostly-static sites; not for highly interactive; no speed guarantee without implementation)
- A link with partial hydration (1058), SSG/Jamstack (1051/1050)
- Island optimization
- Handover and review with you
What you get
- Minimal loaded JS — higher speed (for suitable sites)
- Interactivity only where needed
- An honest suitability assessment for the site type
- Honest boundaries (for content sites; not for highly interactive; no guarantee)
How the work goes: steps
- We assess the site type and the share of interactivity
- If suitable — we move interactivity into islands with independent hydration
- If not — we recommend another approach, honestly set boundaries with you
Why PDV Expert
- Fixed price and timeline — no surprises on the invoice.
- Report and recommendations in plain language — clear without a technical background.
- In touch at every step and answering questions about the result.
FAQ
Will islands suit any site?
No, honestly: islands gives the maximum gain for mostly-static sites with pointed interactivity (blogs, landings, storefronts). But for highly interactive apps where almost every part is interactive (dashboards, editors), there will be so many islands that the advantage disappears — there another approach is more appropriate. We will honestly assess whether islands suits your site type rather than apply it everywhere.
Does islands guarantee speed?
By itself — no, honestly: the architecture helps load less JS, but the final speed depends on the implementation — what was moved to islands, component size, optimization. A poor implementation will eat the gain. The technology is a possibility, not an automatic result. We do islands soundly, but honestly: speed is about the implementation, not the mere fact of the approach.
Is islands a mature and safe solution?
Promising but relatively new and niche, honestly: the approach is closely tied to specific frameworks (Astro and the like), there are fewer specialists, the ecosystem is younger, and you partly lock into the chosen tool. This does not mean 'bad', but it must be deliberately accounted for. We honestly indicate the maturity and lock-in rather than pass islands off as a foolproof standard.
About the provider
The «Islands architecture» service is provided by PDV Expert — a team specialising in «Tech trends». We work under contract and deliver a written report with recommendations.