Unlock the full power of Shopify Plus.
Maximize your Shopify Plus investment with bespoke checkout customizations, B2B wholesale portals, and advanced workflow automation.
What this page covers
Avelize customizes Shopify Plus stores across B2B workflows, checkout extensibility, Shopify Functions, Flow automation, customer accounts, and operational processes that standard Shopify settings cannot handle.
When this matters
Plus customization matters when a team needs enterprise logic, custom pricing, wholesale buying flows, account-level experiences, or automation that supports scale without operational drag.
What Avelize improves
- Checkout and B2B customization
- Shopify Functions and Flow automation
- Custom customer experiences
- Operational workflow improvements
How Avelize works
- Diagnose: We review the current storefront, crawl paths, analytics, customer journey, and business constraints before recommending changes.
- Prioritize: We rank fixes by revenue impact, crawlability, conversion risk, implementation effort, and launch safety.
- Implement: We ship controlled improvements in code, content, UX, schema, internal links, or integrations depending on the page goal.
- Measure: We validate the outcome through Search Console, analytics, QA checks, and follow-up optimization.
Checkout Extensibility
The checkout is your most critical conversion point. With Shopify Plus, we build highly customized checkout experiences using the new Checkout UI Extensions, allowing for real-time upsells, custom trust badges, and specific validation logic without compromising PCI compliance or platform security.
What Checkout Extensibility changed, and what it means for your store
Shopify retired the two mechanisms that most Plus customizations were built on. checkout.liquid was deprecated in stages, with the Thank You and Order Status pages following in August 2025, and Shopify Scripts reached end of life at the same time. Both were replaced by the extensibility model: Checkout UI Extensions, Shopify Functions, and branding through the checkout editor.
For a store that was customized before this shift, the practical consequence is that older work does not carry forward. Line-item scripts, custom checkout markup and Additional Scripts tracking all need rebuilding on the supported APIs rather than porting.
The upgrade is not purely a cost. Extensions run in a sandboxed environment that Shopify keeps compatible across checkout releases, which means a customization stops being something that breaks silently every time the platform updates.
What Shopify Functions can and cannot do
Functions are small pieces of code that run inside Shopify’s backend to alter platform behaviour at defined extension points. They are fast and reliable because of that constraint, and the constraint is the thing to understand before scoping work.
| Functions can | Functions cannot |
|---|---|
| Apply custom discount logic to carts and line items | Call external services mid-execution to fetch data |
| Hide, rename and reorder delivery options | Run long or unbounded computation |
| Hide, rename and reorder payment methods | Write back to the order or mutate unrelated objects |
| Enforce cart and checkout validation rules | Replace a genuine backend service where external state is required |
When logic needs data Shopify does not hold, the answer is a Function reading pre-synced metafields, with a custom app keeping those metafields current. Designing that split correctly is most of the work on a Plus customization project.
B2B on Plus, or a separate wholesale channel
Shopify’s native B2B features cover company accounts, multiple locations per company, price lists, payment terms and buyer permissions on the same storefront as retail. For most brands that is enough, and it is considerably cheaper to operate than a second store.
A separate channel earns its cost in a narrower set of cases: catalogue visibility that must differ entirely rather than by price, contract pricing negotiated per line rather than per list, or approval workflows that need to sit outside Shopify. We scope which of these genuinely apply before proposing an architecture, because the default answer of a second store is usually the expensive one.