Enterprise Web Development and Web Portals

Enterprise web development is the work of building the web systems an organization runs on: customer portals, partner and B2B portals, employee intranets, corporate websites, and the self-service and workflow applications behind them. PS3G builds these on the Microsoft stack, on Java or on open-source platforms, connects them to the ERP, CRM and identity systems you already have, and runs them under defined SLAs if you want us to. “Enterprise” describes the kind of system, not the size of the client. A regional distributor needs a dealer portal that works as reliably as a global manufacturer’s, and we scope the engagement to the organization in front of us.

Enterprise web development for any size of organization

What makes a web system “enterprise” is what it has to do: sign in users from more than one organization, show each of them only their own data, pull that data live from systems of record, keep an audit trail and stay available across every time zone you serve. Those requirements appear at every company size the moment customers, partners or employees expect self-service.

A growing company usually arrives with a specific pain: dealers phoning for order status, employees hunting through shared drives, customers emailing for invoices. A department inside a larger organization usually arrives with a program: a portal that must pass architecture review, use the corporate identity provider and fit a procurement framework. The method is the same for both. Define the audiences, map the data, design the sign-in, then build.

What we build

Customer portals

Self-service for the people who buy from you: orders and order status, invoices and online payment, contracts and documents, support tickets, renewals and account settings. Business customers sign in through their own identity provider; consumers get multi-factor sign-in. Everything the portal shows comes live from your ERP, CRM or billing system rather than from a copy that drifts.

Partner and B2B portals

Dealer, distributor and reseller portals with contract pricing, quoting, order entry against live inventory, warranty and returns claims, training material and co-marketing assets. B2B website development of this kind succeeds or fails on onboarding and permissions, so we design the partner-administrator role, the approval chain and the data each tier can see before the first screen is drawn.

Employee intranets

News, policies, the people directory, forms, approvals and a searchable knowledge base, built on SharePoint and Microsoft 365 where you already own them or as a custom application where you do not. Integrated with your HR system so the directory and org chart maintain themselves.

Corporate websites

Corporate website development for organizations with several brands, regions or languages, legal and brand approval workflows, accessibility obligations and strict hosting rules. Our website development service covers the design and content side; this page covers the governance, integration and platform side that larger programs add.

Self-service and workflow applications

Account opening, claims, permit applications, onboarding, approvals and case management, with rules, deadlines, escalations and an audit trail. These are built as full applications under our web application development practice and surfaced inside the portal, so users see one system rather than five.

Two ways to engage: managed service or staff augmentation

Enterprise web work tends to fit one of two contracts, and we offer both.

	Managed services	Dedicated team or staff augmentation
What it is	PS3G owns the result: analysis, design, build, deployment and ongoing support under a fixed bid and defined SLAs	PS3G engineers work inside your team, under your process and your lead, billed monthly
Best when	You want one accountable party and a predictable cost for a defined system	You have a product owner and a process, and need capacity or a specific skill
You provide	A sponsor, subject-matter experts and timely decisions	Direction, code review and access to your tools
Scaling	Change requests against the agreed scope; a support tier sized to the system	Add or release engineers month to month

Two further models cover the edges: a fixed-scope project for a single portal release, and advisory work such as an architecture review or a platform selection. Our managed professional services page explains how SLA-based support works after launch. How we start: a first conversation, a short assessment of the systems and audiences involved, and a written proposal with scope, deliverables and the engagement model we recommend.

Describe the portal you need and we will come back with a scoping plan.

Stacks: Microsoft, Java, open source, databases

We are vendor-neutral. The stack follows your existing platforms, your team’s skills and the systems the portal must integrate with.

• Microsoft. .NET and ASP.NET Core, Blazor, SharePoint, Dynamics 365, Power Platform, PowerShell automation, SQL Server and Azure. This is the most common choice for portals that must sit next to Microsoft 365 and Entra ID, and our .NET development team builds most of them.
• Java. Spring Boot, Hibernate, and Lucene or Solr for search-heavy portals, typically for organizations with an existing Java estate.
• Open source. Linux, PHP, Node.js, React, Angular, Apache or Nginx, MySQL and PostgreSQL, for organizations that prefer open platforms or run on AWS.
• Databases. SQL Server, Oracle, PostgreSQL, MySQL and Aurora for transactional data; MongoDB, Cassandra and DynamoDB where scale or data shape call for them; Redis and Memcached for caching; Neo4j for relationship-heavy data; Teradata and Redshift for reporting.

Security, SSO and integration

Single sign-on is the first design decision. We integrate with Entra ID, Okta, ADFS and other providers over SAML or OpenID Connect, federate business partners’ own directories where they have them, and apply multi-factor sign-in for everyone else. Authorization is role-based and scoped to the organization each user belongs to, enforced in the API and not only in the screen.

Portals are public-facing doors into private systems, so the controls match: a web application firewall, security headers, encryption in transit and at rest, secrets kept in a vault, dependency scanning in the pipeline, audit logs for sensitive actions and a penetration test before launch. Our information security practice reviews the design and can run the risk assessment your auditors ask for.

Integration is where portal projects earn their keep. We connect to SAP, Dynamics 365 and Oracle ERP, to Salesforce and Dynamics CRM, to HR, document-management and payment systems, through our API development and integration practice. Where a system of record cannot take live calls, we build a synchronized read model with clear rules about how fresh the data is, and we say so in the interface.

Why PS3G

We have built and run multi-tenant, sign-in-based web systems for more than a decade, including our own: our HIPAA-compliant EHR and telehealth platform, DocVilla, serves medical practices across multiple states, which means we operate exactly the kind of portal we build for clients. A US headquarters in Wilmington, Delaware and a delivery center in India give you working-hours contact and extended coverage. Our engineers hold Microsoft and open-source certifications, and a testing center of excellence verifies every release before it reaches your users.

Related services

• Website development: the public corporate site that sits in front of the portal.
• Web application development: the workflow and self-service applications inside it.
• .NET development: the Microsoft stack most portals are built on.
• API development and integration: ERP, CRM, HR and payment connections.
• Information security: risk assessment, policy and testing for public-facing systems.
• Managed professional services: SLA-based support after launch.

See the full list of PS3G solutions.

Frequently asked questions

What is the difference between a web portal and a website?

A website presents the same content to every visitor. A web portal signs users in and shows each one their own data, pulled from systems such as your ERP, CRM or HR platform, with permissions, workflows and an audit trail. Web portal development therefore involves identity, integration and security design as much as screen design, and it is scoped and supported like an application rather than a site.

Can the portal use our existing Entra ID or Active Directory sign-in?

Yes. We integrate with Entra ID, Active Directory Federation Services, Okta and other providers over SAML or OpenID Connect, so employees sign in with the account they already have. For partner and customer portals we can federate with their directories or provide multi-factor sign-in for individuals. Group membership in your directory can drive portal roles, so access changes when HR changes.

Do you build intranets on SharePoint or with custom code?

Both, and the choice follows what you own. If you already run Microsoft 365, SharePoint with Power Platform usually gives the fastest, most maintainable intranet, extended with custom web parts where needed. If you do not, or the intranet is mostly custom workflow, a custom application on .NET or an open-source stack avoids licensing you would not otherwise need. We recommend one in the proposal and explain why.

How do you connect a portal to our ERP or CRM?

Through the system’s supported interface: APIs for Dynamics 365, Salesforce and most modern platforms, and integration layers or scheduled synchronization for older ERPs. We map each portal screen to the system of record behind it, decide whether data is read live or synchronized, and build the integration with error handling, monitoring and retry logic so a failed call never shows a user wrong data.

Is enterprise web development only for large companies?

No. The word describes the system, not the client. A distributor with a dozen employees and three hundred dealers needs a portal with sign-in, live inventory and permissions, and that is enterprise web work. We scope the engagement to the organization: a fixed-scope first release for a smaller company, a managed service or a dedicated team for a larger program, with the same engineering standards in each.

Who supports the portal after launch?

Under a managed service, we do, under defined SLAs that cover monitoring, patching, backups, fixes and enhancements. Under staff augmentation, your team does, with our engineers staying on as long as you need them. Either way you own the code, the hosting accounts and the documentation, and a handover plan is part of every proposal so support is never tied to a single vendor.