Guide · Web development
Most comparisons focus on features. This one focuses on what happens after launch — because that's where the real difference is.
What they are
Performance
A default WordPress site is slow. The fix is a stack of plugins — caching, CDN, image optimization, minification. Each plugin adds maintenance surface and potential conflicts. You're optimizing around a problem that didn't have to exist.
Astro outputs pre-rendered HTML. There's nothing to cache because there's no server-side execution to cache. A well-built Astro site scores in the high 90s on Core Web Vitals without a single optimization plugin. The site I built for Le Monde ran at editorial scale on this principle.
Security
WordPress runs PHP on a server. The database is reachable. /wp-admin is a known URL. Plugins introduce third-party code into your production environment. The most common CMS vulnerabilities in security reports are WordPress vulnerabilities — not because WordPress is especially badly written, but because the architecture exposes surfaces that a static site doesn't have.
A static Astro site has no database, no PHP runtime, no admin panel accessible at a predictable URL. The main WordPress attack vectors don't exist. There's nothing to exploit at request time because nothing executes at request time.
Maintenance
WordPress core, plugins and themes all update independently. A plugin update can break another plugin. A WordPress major version can break a theme. Staying secure means staying current — which means ongoing maintenance work, indefinitely.
A WordPress site installed in 2019 and left mostly alone is a liability in 2025. Outdated plugins, deprecated functions, a theme that hasn't been tested against the current WordPress version. The longer it runs, the more expensive the next intervention.
An Astro site has no runtime dependencies to keep secure. The HTML files are static. The site you launched in 2024 works the same way in 2029 — nothing has expired, nothing has become incompatible. Maintenance work happens when you want to change the site, not because the infrastructure demands it.
Content editing
The block editor gives content editors access to layout decisions — column counts, spacing, color overrides. On a well-maintained site with a strict custom theme, this is manageable. On most real WordPress sites, editors gradually accumulate overrides that drift from the original design.
With a structured content layer, editors see fields — not a canvas. "Headline", "subline", "body text", "image". They can't move the hero above the nav. They can't change the font on one page. The design is enforced at the architecture level, not at the training level. This is what I build with Frontmatter Studio.
When WordPress is actually the right choice
For most business websites, portfolios, SaaS landing pages and service sites — none of these apply. The choice of WordPress in those cases is habit, not requirement.
Services
Custom websites on a static stack with a structured content layer. No WordPress. No maintenance overhead. Fast by default.
Related
Custom websites on a stack I own. Fast, maintainable, no technical debt.
What the alternative looks like in practice.
For teams with an existing backend that need a modern Astro frontend.