Start from customer demand, not a feature list
Review the questions, requests and status checks customers already make through email, phone or support. A portal earns its place when it removes friction from those recurring interactions.
Decide what the source of truth is
Every piece of portal data should have clear ownership. If staff update one system while customers see another, confidence disappears quickly.
Integration design is therefore part of portal design, not a separate backend task.
Model identity and permissions early
Accounts may represent individuals, organisations, teams or delegated users. Those distinctions affect what people can see, edit and approve.
Permission rules are easier to design before the interface is built than after sensitive information has already been exposed through generic account screens.
Make self-service recoverable
Customers need clear confirmation, status and recovery when an action fails or requires staff review. The portal should not create a silent dead end because an integration or downstream process did not complete.
Measure whether the portal changes the service
Useful measures can include fewer status enquiries, faster completion of routine requests, better data quality or shorter onboarding time.
The goal is not simply portal logins; it is a better service journey for customers and staff.