Multi-Subsidiary Corporate Intranet Cost in Amsterdam (2026)

The verdict in three sentences

A custom group intranet is justified when your subsidiaries have segregation and personalization needs that standard SharePoint cannot cover without heavy development. In 2026, budget 50,000 to 120,000 EUR (about 75,000-180,000 USD) and 4 to 7 months for a unified intranet with SSO, per-subsidiary access control and cross-group search. Well designed, it reaches 70% adoption in 3 months where an imposed portal often stalls below 40%.

Custom vs SharePoint: the real 2026 math

SharePoint is powerful but assumes Microsoft 365 licenses and costly customization to reach a true group experience. Custom starts from your actual usage.

If you already pay for M365, SharePoint may suffice. But as soon as experience and per-subsidiary segregation become strategic, custom delivers a better adoption rate and a controlled total cost at the scale of 800 staff.

The building blocks of a group intranet

The challenge is not features but adoption. Here are the key modules and their role in engagement.

Mini case study

Ines is communications director of a group of 5 subsidiaries (800 staff total) in Amsterdam. Information flows by email and each subsidiary has its own disorganized file share: an employee loses on average 20 minutes/day searching for a document or a contact. The group invests 88,000 EUR in a custom intranet with SSO and per-subsidiary rights.

After 3 months, adoption reaches 72%. By cutting search time from 20 to 8 minutes/day, each employee saves 12 minutes/day, about 1 hour/week. Across 800 staff, that recovers ~800 hours/week at group scale. Even conservatively valued at 30 EUR/h, the annual gain runs into hundreds of thousands of euros of productive time. On avoided premium SharePoint licenses and related maintenance alone, the return plays out in under 2 years.

FAQ

How is access managed between subsidiaries? The system relies on roles and scopes: each subsidiary sees its private content plus shared group content. An employee of subsidiary A cannot access subsidiary B's confidential documents unless explicitly authorized. Management is fine-grained and centralized.

Does the intranet connect to our Azure AD / Okta directory? Yes, via SSO (SAML/OIDC). Staff log in with their corporate credentials, no new password, and access updates automatically per the directory. This is essential for adoption and security.

How long to deploy across 5 subsidiaries? 4 to 7 months depending on the number of modules and integrations. We often deploy to a pilot subsidiary first, then scale, which secures adoption and allows adjustments before the global launch.

Can we integrate our existing tools (ERP, HRIS, DMS)? Yes, via API. The intranet becomes the single entry point: HR requests, document access, KPIs. Custom integrations represent 15 to 30% of the budget depending on their number and complexity.

How do we guarantee 70% adoption? By involving each subsidiary's communicators, polishing mobile UX, migrating useful content from launch, and animating the intranet (regular news). An empty intranet dies; a living one becomes the daily reflex.

Let's scope your project. Specify the number of subsidiaries, headcount, your directory (Azure AD/Okta) and desired integrations; we'll frame an intranet between 50,000 and 120,000 EUR. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.