Why leave WooCommerce at all
WooCommerce is excellent until the plugin stack that grew around it becomes the product. Pricing, SEO, media and payments each arrive as a plugin, and after a few years the store is slow under load, hard to reason about, and dangerous to change.
At that point the useful question is not which plugin to install next. It is which parts of the system you want to own outright, with a small, auditable surface you can change without fear.
Why a modular monolith, not microservices
A single deployable service, internally partitioned into modules that each own their data and expose a narrow, typed interface. It gives you clear boundaries without the operational tax of a distributed system.
The critical detail is that module boundaries are enforced mechanically in CI. Architecture that is only a diagram erodes; architecture the build refuses to let you violate survives contact with a deadline.
The zero-SEO-loss constraint
Every URL, redirect, canonical and structured-data signal has to be preserved so search engines see the same store at the same addresses. This is not a finishing task — it is a design input that constrains routing and rendering from day one.
In practice that means treating the URL map and the schema output as contracts, testing them against the live site before cutover, and shipping the migration behind a switch you can reverse.
How I de-risk the cutover
Indexed reads, no N+1 queries, cached hot paths, and a catalog and pricing engine kept vertical-neutral so the same platform could serve a different retailer. Persian and English are first-class from the start, not bolted on.
The migration ships incrementally and reversibly. A rebuild that must all land at once is a rebuild that will land at the worst possible moment.
What the business actually gets
A fast, secure, maintainable platform the business owns, instead of a plugin stack it is afraid to touch. The value is not novelty — it is that changing the store stops being a gamble.
That is the difference between a site that is maintained and one that is merely survived.
Related work
For implementation detail, see Commerce Platform — case study and MU-plugin showcase. You can also browse the project library and the case studies.