How Astro differs from typical websites
Many modern websites ship a large amount of JavaScript to the browser, even when the page is just text and photos. The phone has to download and run all of it before the visitor sees anything. Astro works the other way around: it builds most pages ahead of time as plain HTML and adds scripts only where needed.
Each interactive element (a menu, calculator, form or filter) works as a separate "island" and loads when it's needed, for example when the user scrolls to it. The rest of the page stays lightweight.
What Astro can do
- build the site as static pages, or render them on the server when content changes constantly;
- use React, Vue or Svelte components in the same project;
- pull content from files, a headless CMS or any API;
- automatically compress images and serve them at the right size;
- provide smooth page transitions without turning the site into a complex app.
Astro advantages
- Speed. Minimal scripts mean fast loading, especially on phones, which matters for both visitors and search.
- Simple, low-cost hosting. A static site can be hosted on Netlify, Vercel or Cloudflare, often without a dedicated server.
- A smaller attack surface. With no database or admin panel on the server, there are far fewer ways to attack the site.
- Flexibility for developers. You can reuse existing React or Vue components from other projects.
Limitations and drawbacks
- No admin panel. Astro is a framework, not a CMS. For editors to update content themselves, you need to connect a separate content management system.
- Not for complex apps. A highly interactive customer portal, dashboard or online service is better built with other tools.
- Structural changes require a developer. You can't add a new page type or block without a developer, even if the copy is self-edited.
- A smaller ecosystem. There are fewer ready-made integrations and themes than for Next.js or WordPress.
- Large sites take longer to build. With tens of thousands of pages, a full build takes time, and the architecture has to account for it.
When to choose something else
- If the site combines content with lots of interactivity (a cart, a customer portal, personalization), Next.js is a better fit.
- If marketers need to change pages themselves every day and the budget is tight, a traditional CMS like WordPress provides that without a separate integration.
- If it's an online store, a dedicated ecommerce platform is the better choice.
Where the content comes from
Files in the project. Copy is stored as Markdown alongside the code. This is the simplest and cheapest option for documentation, technical blogs and sites that change rarely, usually by a developer.
Headless CMS. Copy, images and pages are edited in a convenient admin panel such as Strapi, and the Astro site updates automatically on publish. This option suits teams that regularly publish news, articles or service pages.
A hybrid approach. Core pages live in the CMS, while technical sections or legal copy stay in files. We tailor the combination to your workflow, not the other way around.
Astro and SEO
Search engines get fully rendered pages with all the text from Astro, not an empty shell filled in by scripts. That makes indexing easier. On top of that, we set up:
- meta tags and headings for each page type;
- a sitemap and rules for search engine crawlers;
- structured data for rich results;
- redirects from old URLs when migrating from another platform.
A fast site is a solid foundation, but it doesn't replace work on content and structure. Learn more on our SEO services page.
A new site or migrating an existing one
A new Astro site starts with a design broken down into components and a choice of content source. We add interactivity deliberately, deciding for each element whether it needs JavaScript at all.
Migration makes sense when your current site is slow, heavy or dependent on a page builder. We move the content, preserve URLs and meta tags, and compare speed before and after so the results show up in numbers, not just words.
Integrations and post-launch support
Static doesn't mean isolated. We connect your Astro site to everything you need for marketing and sales:
- lead forms that send data to your CRM, email or Slack;
- GA4, Google Tag Manager and ad platform pixels with configured events;
- site search for a knowledge base or documentation;
- booking, chat or payment widgets from third-party services.
After launch, a site like this is easier to maintain than a traditional CMS: there are no plugins asking for updates every week. We periodically update dependencies, monitor performance and add new pages and blocks as your business grows.
What affects cost
- Design and number of templates: how many different page types and blocks need to be built.
- Content source: files in the project, or connecting and configuring a headless CMS.
- Interactive elements: calculators, filters, forms with logic, site search.
- Languages: the number of language versions and how they relate to each other.
- Migration: the amount of content from the old site and the number of URLs to redirect.
FAQ
Will we be able to edit the site ourselves? Yes, if we connect a headless CMS. Without one, changes are made by a developer, which only works for sites that are rarely updated.
Can we add a lead form or online payments? Yes. Forms, payments and CRM integrations run through separate serverless functions or third-party services.
Is Astro suitable for a large site? For a content site, yes, even a very large one. But for thousands of frequently changing pages, we set up server-side rendering or incremental rebuilds.
What if we need more complex functionality later? Astro lets you add interactive components gradually. If the project grows into a full-fledged app, part of it can be moved to a separate service.
Why Promodex
Promodex has been in business since 2015 and has delivered 750+ projects, from landing pages to large websites and services. That's why Astro is one of our tools, not a universal answer: we recommend it where speed and simplicity bring real value. The designers, developers and SEO specialists working on your site are our own in-house team; we don't outsource the work. After launch, we stay with you so your site keeps growing along with your business.