Building a SaaS marketing site as a system, not a stack of pages.

The one-off page habit is what kills SaaS sites

Most SaaS marketing sites start as a handful of bespoke pages built by whoever was available at the time. Six months later there are four different hero layouts, three pricing table styles and no one remembers which component is actually load-bearing. Every new campaign page becomes a custom build because nothing was designed to be reused.

A modular system flips this. You define a fixed set of blocks, hero, feature grid, comparison table, logo wall, pricing tiers, FAQ accordion, CTA band, and every page on the site is an assembly of those blocks in a different order. New landing pages take hours, not weeks, because nobody is designing from scratch.

Design the content model before the visual design

The mistake most teams make is designing the visual system first and discovering the content model afterward, when a marketer tries to add a fourth pricing tier and the layout breaks. Define what fields each block actually needs, a headline, a supporting line, an optional badge, one to six feature items, before anyone opens Figma.

This content-first approach also makes the system CMS-friendly. If a block is defined as a strict schema rather than a loose canvas, a marketer can populate a new landing page without a developer touching code, and the design stays consistent because the schema will not let it drift.

Build variation into the blocks, not around them

A rigid system where every hero looks identical gets abandoned within a quarter because it cannot express a product launch differently from a pricing page. The fix is not more one-off pages, it is variation baked into each block: a hero with two, three or four supporting proof points, a feature grid that works with two or six items, a CTA band with one or two buttons.

This is the difference between a component library and a real system. A library gives you parts. A system gives you parts plus the rules for how they flex, so a growth marketer can build a page that looks intentional without needing a designer in the loop for every iteration.

Govern the system or it decays within a year

Someone has to own the modular library, deciding when a one-off request becomes a new sanctioned block versus a misuse of an existing one. Without this governance, every team adds their own variant and the system quietly turns back into the pile of bespoke pages it was meant to replace.