Astro produces a faster site with almost no attack surface and nothing to patch. WordPress produces a site whose owner can change it without a developer. That second point decides more migrations than performance does, and it is the one people discover afterwards.
The question that decides it
Who edits this site, and how often?
If the answer is a developer, or someone comfortable with a git workflow, Astro is better on nearly every axis. If the answer is the business owner adding a service page on a Tuesday, moving to a static build makes the site faster and makes updating it someone else’s job. That is often a worse outcome even though every technical metric improved.
Plenty of migrations are technically successful and operationally a downgrade for exactly this reason.
Side by side
| WordPress | Astro | |
|---|---|---|
| Non-technical editing | Yes | Needs a CMS bolted on |
| Speed by default | Depends on plugins | Very fast |
| Security maintenance | Ongoing, forever | Almost none |
| Plugin ecosystem | Enormous | You wire it up |
| Hosting cost | Managed hosting | Often near zero |
| Version control | Awkward | Native |
| Content at scale from data | Possible, clumsy | Natural |
| Ecommerce, memberships | Install a plugin | Integrate a service |
What you actually gain
Nothing to patch. This is underrated. A WordPress site is a running application with plugins that need updating, and an un-updated site is a liability that eventually becomes someone’s bad afternoon. A static build has essentially no equivalent exposure.
Speed you do not have to defend. On a content page there is no framework runtime to hydrate, so the page is interactive when it paints. You stop managing caching plugins to undo the cost of other plugins.
Pages generated from data. This is the capability that changed most for me. One route plus one data file can produce a large set of genuinely distinct pages, versioned in git, each with its own metadata and structured data. Doing that in WordPress is possible and unpleasant. I built 58 pages this way.
Real review. Content changes become diffs someone can look at before they are live, which is a different standard of care than editing production in an admin panel.
What you give up
Being straight about it, because migration content usually is not.
The admin. Someone non-technical could add a page, upload an image, and reorder a menu. Replacing that means adding a headless CMS, which is another service, another cost, and another thing to keep in sync.
The plugin ecosystem. Forms, memberships, ecommerce, search, multilingual — each becomes a decision and an integration instead of an install. For a simple marketing site that is fine. For anything with real functionality it is the whole project.
Familiarity. Any agency can pick up a WordPress site. Fewer can pick up your Astro repository. That matters more for a client site than for your own.
Who should not move
- A team that edits weekly with nobody technical. You will hand them a faster site they cannot change.
- Anyone depending on a handful of plugins for real functionality. Price the replacements before deciding, not after.
- A site that works and is not slow. Migration is a cost with no revenue attached. “WordPress is old” is not a business reason.
- A client who will need another agency later. Optimising for your preferences over their continuity is a bad trade.
Who should
- Sites that are mostly read. Marketing, documentation, portfolios, publications.
- Anyone generating pages from structured data. This is where the gap is largest.
- Sites where speed is commercially material and the current build is fighting plugin weight.
- Developer-maintained sites where the admin was never used anyway.
- Sites that have been compromised or keep needing security attention.
Migrating without losing rankings
If you do move, the SEO risk is almost entirely in the URLs.
- Inventory every indexed URL first. Not just the ones in your menu — old posts, attachment pages, category archives, anything with links.
- Map each to its new location and 301 it. A redirect map built after launch is a redirect map built from traffic you already lost.
- Keep slugs identical where you can. Every changed URL is a small unforced risk.
- Match or improve the content. A migration that quietly halves your word count is a content change wearing a technical change’s clothes.
- Ship the sitemap on day one and confirm every URL in it returns 200.
- Watch coverage for a month. Problems surface as crawl errors before they surface as traffic loss.
FAQ
Is Astro better than WordPress?
For a site that mostly gets read, yes. For a site its owner needs to edit without a developer, usually not.
Who should not move?
Teams that edit weekly with nobody technical, and anyone relying on plugins for real functionality.
Does moving improve SEO?
It usually improves Core Web Vitals. That is one input. A well-built WordPress site beats a badly-built Astro one.
What do you lose?
The admin and the plugin ecosystem. Forms, memberships, ecommerce and search become integrations.
Related: Astro vs Next.js, programmatic SEO with AI, and how I build websites.