# Insights from the _Sev team._

Practical Shopify development, performance, and CRO notes from our engineering team — no filler, no thought-leadership. Just what we’ve learned shipping real stores.

## Migrations

### Migrating from Magento 2 to Shopify Plus: the playbook

The 2026 field guide to migrating from Magento 2 to Shopify Plus — the audit, the data map, the redirect strategy, the cutover, and the 30-day SEO recovery curve.

_Apr 22, 2026·12 min read_

[Read more](/content/posts/magento-to-shopify-plus-migration-playbook/index.html)

## Technical

### Shopify theme performance: the 2026 playbook

Lighthouse 98, INP under 150ms, LCP under two seconds — on a real Plus store with twelve apps installed and a merch team that won't stop adding Hero sections. The wins, the losses, and the audit method that finds the next bottleneck before the merchant complains.

_Apr 6, 2026·11 min read_

[Read more](/content/posts/shopify-theme-performance-2026/index.html)

### BigCommerce to Shopify Plus: a 2026 migration playbook

Channel fees, theme constraints, the option-set tax. Why merchants are leaving BigCommerce in 2026 and what an honest Shopify Plus migration actually costs — catalog model, URL map, channel consolidation, timeline.

_Apr 6, 2026·13 min read_

[Read more](/content/posts/bigcommerce-to-shopify-plus-playbook/index.html)

### Checkout CRO on Shopify Plus: what actually moves the needle (8-store study)

Six months. Eight Plus stores. Fourteen A/B tests. The four interventions that won every time, the three that lost, and the four that depend — with sample sizes, lift, and what you should actually run on your store.

_Mar 4, 2026·12 min read_

[Read more](/content/posts/shopify-checkout-cro-what-moves-the-needle/index.html)

### Hydrogen vs. Liquid: when headless is the right call (and when it isn't)

Forty-plus Liquid themes, twelve Hydrogen builds. The seven questions we ask in kickoffs to decide which platform layer fits — and the cost reality most agencies don't put in the proposal.

_Jan 2, 2026·12 min read_

[Read more](/content/posts/hydrogen-vs-liquid-when-to-go-headless/index.html)

### Building B2B checkout extensions on Shopify Plus: a 2026 field guide

Net-30 terms, PO numbers, per-account pricing, custom shipping logic — and the eight-week build it takes to ship them on top of Shopify's checkout extensibility stack. From an agency that has shipped twelve.

_Dec 6, 2025·13 min read_

[Read more](/content/posts/shopify-b2b-checkout-extensions-2026/index.html)

### Shipping Shopify Functions in Rust: a complete 2026 tutorial

Six Rust Functions in production. The cargo manifest, the wasm-size optimisation that drops binaries 60%, the JSON schema mismatch trap nobody documents, and the cold-start latency data that justifies the extra build complexity.

_Sep 22, 2025·12 min read_

[Read more](/content/posts/shopify-functions-rust-tutorial/index.html)

### Shopify Functions discount API: BOGO, tiered pricing, and bundle logic done right

Twenty Functions in production, and the bugs we hit on every one. The Discount Function input/output contract, the BOGO traps, the tiered-pricing decision points, and the test harness that catches the schema drift the Shopify CLI doesn't.

_Jun 12, 2025·12 min read_

[Read more](/content/posts/shopify-functions-discount-api-deep-dive/index.html)

### WooCommerce to Shopify Plus: preserving SEO through the migration

Five years of plugin churn, custom permalinks, and translated slugs do not port cleanly to Shopify. Here is the redirect map, the schema audit, and the 30-day GSC monitoring plan that keep your rankings alive through cutover.

_May 17, 2025·15 min read_

[Read more](/content/posts/woocommerce-to-shopify-seo-guide/index.html)