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A B2B customer portal is a secure, logged-in website where business customers can order, track shipments, download invoices, manage users and get support without calling your team. Building one comes down to three decisions: which features to launch first, which systems the portal must connect to (usually ERP, commerce, CRM and support), and whether to extend a commerce platform such as Adobe Commerce or build a custom app. The cost is driven mostly by integrations and permissions, not by screens.
This guide gives a feature priority list (must, should, later), an integration map, the main stack options and the cost drivers to discuss before you ask for quotes.
What a B2B customer portal usually does
- Self-service ordering: reorder, quick order by SKU, customer-specific catalogs and prices.
- Account visibility: orders, shipments, invoices, statements, credit limits and payments.
- Company management: multiple users per customer company, with roles and approval rules.
- Documents: certificates, spec sheets, contracts and price lists per customer.
- Service: returns, warranty claims, support tickets and service requests.
Some portals are mainly ordering tools; others are mainly service or account tools with no ordering at all. Decide which yours is before planning features.
Feature priority list: must, should, later
Launch with what removes the most calls and emails, then add features based on usage. This list is a starting point; reorder it using your own support and sales data.
| Feature | Priority | Why |
|---|---|---|
| Secure login, password reset, optional SSO for large customers | Must | Nothing works without trusted access |
| Company accounts with multiple users and roles | Must | Buyers, approvers and finance users need different access |
| Order history and order status | Must | Usually the most common reason customers call |
| Invoices and statements to download | Must | Cuts finance queries |
| Customer-specific prices and catalogs | Must (if ordering) | Wrong prices destroy trust in self-service |
| Quick order by SKU and reorder | Must (if ordering) | B2B buyers know what they want |
| Shipment tracking | Should | High value, depends on carrier or ERP data |
| Requisition or saved lists | Should | Speeds up repeat ordering |
| Approval workflows and purchase orders | Should | Needed by larger customers with spending controls |
| Quote requests and negotiation | Should | Moves quote back-and-forth out of email |
| Returns and claims (RMA) | Should | Reduces manual handling |
| Document library per customer | Should | Certificates and spec sheets on demand |
| Online payment of invoices | Later | Useful, but involves finance processes and payment setup |
| Support tickets inside the portal | Later | Can link to an existing help desk at first |
| Analytics for customers (spend reports) | Later | Valued by large accounts once data is trustworthy |
| AI search or assistant | Later | Add once catalog and order data are clean |
Integration map
Most of the effort in a portal is moving data between systems reliably. Map each data type to its source of truth before design starts.
| System | Data it owns | Direction | Typical sync |
|---|---|---|---|
| ERP | Customers, prices, credit limits, stock, orders, invoices, statements | ERP to portal; orders back to ERP | Near real time for orders and stock; scheduled for prices and invoices |
| Commerce platform | Catalog display, cart, checkout, company accounts, quotes | Two-way with ERP | Event-driven through APIs and message queues |
| PIM | Product data, attributes, images, documents | PIM to portal | Scheduled or on publish |
| CRM | Contacts, account owners, opportunities | Two-way | On change |
| Identity provider | Logins and SSO for large customers | To portal | At login (SAML or OpenID Connect) |
| Carriers or WMS | Shipment and tracking data | To portal | On dispatch and status change |
| Help desk | Tickets and cases | Two-way or link-out | On change |
| Payment provider | Invoice payments, saved payment methods | Two-way | At payment time |
Two rules help: never let two systems both own the same field, and plan what the portal shows when an upstream system is slow or offline.
Stack options
Option 1: extend Adobe Commerce B2B
Adobe Commerce includes B2B features: company accounts with roles and permissions, shared catalogs with custom pricing, quick order, requisition lists, negotiable quotes, purchase orders with approval rules and payment on account. These are part of Adobe Commerce, not Magento Open Source. If ordering is central and you already run Adobe Commerce, this is often the fastest route; custom work then focuses on ERP integration and portal pages such as invoices and statements. Our B2B ecommerce guide covers the commerce side in more depth.
Option 2: custom web application
A custom portal built with a framework such as Laravel or Node.js, often with a React or Next.js front end, fits when the portal is mainly about accounts, service, documents or complex workflows rather than catalog ordering, or when your processes do not match a commerce platform's model. You build more yourself, but you control every screen and workflow. See Laravel vs Node.js for choosing the back end.
Option 3: hybrid
Adobe Commerce handles catalog, cart and checkout, while a custom app handles service, documents and account features, sharing login through single sign-on. This suits businesses whose ordering fits commerce well but whose service processes are specific.
Security and access
- Role-based permissions checked on the server for every request, not just hidden in the interface.
- Strict separation between customer companies, tested with automated checks.
- Multi-factor authentication for admin users and optional MFA or SSO for customers.
- Audit logs for orders, approvals and user changes.
- Use a recognized checklist such as the OWASP Application Security Verification Standard to set security requirements.
Cost drivers
There is no meaningful average price for a portal. A fixed quote should follow a short discovery and audit of your systems. These are the factors that move effort up or down:
- Number and quality of integrations: a modern ERP with documented APIs is far less work than file exports or a legacy system.
- Pricing complexity: contract prices, tiered discounts and price lists per customer group.
- Permissions and workflows: approval chains, budget limits and multi-level company structures.
- Data quality: cleaning product and customer data often takes longer than building screens.
- Platform choice: extending existing Adobe Commerce B2B features versus building custom features.
- Design and UX: using a standard design system versus fully custom design.
- Single sign-on and identity requirements from large customers.
- Migration: moving historic orders, invoices and users from an existing portal.
- Ongoing costs: hosting, licences, monitoring, security updates and new features after launch.
A sensible delivery plan
- Discovery: interview customers and support staff, list the top reasons customers contact you, and map systems.
- Define the first release using the must-have list.
- Build integrations first, with test data from real systems, then screens.
- Pilot with a few friendly customers, fix what they find, then roll out.
- Measure adoption: logins, self-service orders and the drop in calls and emails, then pick the next features.
FAQ
Can Magento Open Source run a B2B portal?
Yes, with extensions or custom development for company accounts, quotes and approvals. Adobe Commerce includes these B2B features natively.
Should the portal be part of our online store?
If customers order from you online, combining them avoids two logins and two catalogs. If the portal is mainly for service or documents, a separate app with shared login can be simpler.
How do we get customers to use it?
Launch with the features that save them the most time, such as invoices and order status, migrate their users for them, and have account managers walk key customers through it.
Next steps
Start by listing the systems involved and the top five reasons customers contact your team. If ordering is central, Mistri's Adobe Commerce development service can extend Adobe Commerce B2B. If the portal is mainly a custom application, Mistri's web application development service covers Laravel, Node.js and React builds.
Sources: Adobe Experience League: B2B for Adobe Commerce; Adobe Developer: Adobe Commerce GraphQL; OWASP: Application Security Verification Standard.
