WordPress MultiSite Relaunch for Fidelis Revision & Steuerberatung

Five websites of a tax consultancy group in a single system

For Fidelis Revision & Steuerberatung, we delivered a complete relaunch from a custom-built CodeIgniter CMS to a WordPress MultiSite system. Today, five corporate websites run from a single central backend. Accessibility wasn’t a later add-on but an integral part of the project. The new site reaches a mobile PageSpeed score of 97, excellent Core Web Vitals, and a high on-page score in Seobility. Structured data per Schema.org was implemented specifically for tax advisory and audit firms.

Client
Fidelis Revision & Steuerberatung
Service
WordPress MultiSite, relaunch & accessibility
Cooperation since
2025
Fünf Unternehmenswebsites der Fidelis-Gruppe auf Tablets – AGRO Steuerberatung, AGPV, Fidelis Revision, Fidelis Rechtsberatung und Fidelis Unternehmensberatung in einem WordPress-MultiSite-System

The Brief

Fidelis Revision & Steuerberatung’s existing website was based on a custom-built CMS on top of CodeIgniter; additional corporate websites ran in parallel on other technical solutions. Content updates, maintenance, and accessibility could only be handled with considerable effort. After a comprehensive audit of all existing websites, we jointly decided on a full relaunch on a WordPress MultiSite foundation. Today, the main website fidelis-revision.de along with four additional corporate websites runs in a single central backend.

Five websites in one backend: WordPress MultiSite for a tax consultancy group

The WordPress MultiSite system brings five corporate websites together in a single central backend. Two of the connected websites deliberately use a different color scheme but remain technically part of the same system. Content, user rights, updates, and security mechanisms are managed centrally, while each website retains its own identity in appearance and positioning. Accessibility wasn’t a later add-on but an integral part of the relaunch: structured content, clean heading hierarchies, sufficient color contrast, meaningful focus handling, and fully accessible navigation elements were implemented directly in the theme and the content modules. For Fidelis, operating as a heavily regulated audit and tax consultancy firm, data protection, accessibility, performance, and reliability are not optional extras but essential prerequisites.

PageSpeed 97, structured data for tax advisors, and a clear content structure

The new site achieves a mobile PageSpeed score of 97, excellent Core Web Vitals, and a high on-page score in Seobility. We deliberately focused on clean code, optimized image delivery, and a clear separation of content and functionality. For Fidelis, structured data per Schema.org was implemented – specifically fitted to tax advisory and audit firms – to improve findability in search results and AI-driven systems. The homepage guides visitors clearly through services, team, locations, and contacts. Content is easy to scan, clearly worded, and consistently aligned with the needs of clients.

At a glance
Relaunch from CodeIgniter CMS to WordPress MultiSite
Five corporate websites in a single central backend
Accessibility as an integral part of the project
Mobile PageSpeed score of 97
Excellent Core Web Vitals
High on-page score in Seobility
Structured data per Schema.org for tax advisors
Central management of content, permissions, and updates
Individual color scheme per website on a shared technical foundation

I have been working successfully with 4eck Media GmbH & Co. KG for many years. I particularly like their creative/consultative approach, high flexibility, and speed of work. I am also impressed by the tireless and constantly improving manner in which this company continuously operates. For me as a real estate investor, 4eck Media's expertise in the real estate industry is also very advantageous and beneficial, saving time and money and delivering even better results.

Multiple websites, one system?

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