Object caching: Redis or similar object caching dramatically reduces database query load for dynamic content, particularly valuable for authenticated dashboards or personalized content that can’t rely on standard page caching.

Image optimization and lazy loading: Compressing images and deferring off-screen image loading reduces initial page weight significantly, especially for content-heavy marketing pages with multiple screenshots or graphics.

Plugin audit and reduction: Each active plugin adds processing overhead to every page load — periodically auditing which plugins are genuinely still needed catches accumulated bloat that silently degrades performance over time.

Database table cleanup: Accumulated post revisions, spam comments, and orphaned metadata bloat the database over time, slowing down queries across the entire site — periodic cleanup keeps query performance from degrading as content volume grows.

Standard WordPress optimization advice often focuses on static content caching, which helps marketing pages but doesn’t address the authenticated, dynamic content a SaaS site often serves — customer dashboards, account settings, usage data. For these uncacheable areas, the optimization work shifts toward database query efficiency and object caching rather than the page-caching techniques that work well for a typical blog.

It’s worth mapping your site’s pages into two categories before optimizing: content that’s identical for every visitor (marketing pages, blog posts) and content that’s personalized per user (dashboards, account pages). The first category benefits enormously from standard page caching; the second needs a fundamentally different approach centered on making the underlying database queries themselves faster, since the output can’t be cached the same way.

This distinction also affects how you should think about CDN usage. Static assets and cacheable marketing pages benefit directly from CDN edge delivery, while authenticated dashboard requests still need to reach your origin server every time — meaning CDN improvements alone won’t meaningfully speed up the parts of a SaaS site that matter most to logged-in, paying customers.