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AITEZA - AI Business Solution

In October 2024, the weyer group expanded its range of services with the founding of weyer data engineering gmbh, based in Düren. The purpose of the new company is to develop and operate an innovative AI Business Solution. This AI software is intended to provide both the weyer group and external licencees with the rapidly growing possibilities of using artificial intelligence in everyday professional work. The AI Business Solution AITEZA was designed in a development phase and has been used and further developed in the companies of the weyer group and by external customers since the beginning of 2025.

What ist the AI Business Solution AITEZA?

AITEZA is a secure, non-disclosure agreement compliant AI tool that protects sensitive documents and provides validated, traceable knowledge. AITEZA overcomes the weaknesses of other AI tools by providing knowledge bases in structured, user-specific data rooms. It is possible to switch to different AI models at any time, which are best suited to individual needs. In this way, the potential to achieve optimum results can be optimally utilised.

The majority shareholder and managing director of weyer data engineering gmbh is Philip Weyer, a computer science engineer with several years of experience in software development.

Added value of the web-based AI Business Solution AITEZA compared to freely accessible consumer AIs

Data protection

Conformity with NDA/confidentiality declarations Only internal use of data, no disclosure to third parties No outflow of expertise, as external training of AIs is excluded

Future-proof technology

Connection of various Large Language Models (LLM) via standard interface No binding to LLM manufacturer Precise use of multiple models with task specialisation Benefit from the rapid further development of different AI models

Usability

Use of in-house expertise in data rooms (standard formats and websites) Provision of large amounts of data in a hierarchical structure Simple upload (drag and drop) Simple data maintenance Easy access to current chats and conversations via dynamic histories Permanent provision of conversation histories

Quality

Only validated and deliberately provided data as a basis No dubious external or internet knowledge, thus minimising hallucinations Direct access to source texts to check the answer Conversational linking of knowledge areas through selection of data spaces Internet knowledge can/must be queried in ‘casual chat’ Conversational use of suitable AI models

Access management

Simple management of access rights (viewer/owner) for user groups Prerequisite for the cross-user and cross-company provision of structured expertise

Low follow-up costs

Only one licence for the use of many task-specific AI models Low administration costs thanks to simple access management Low maintenance effort thanks to structured, cross-company provision of expertise Support with implementation and training as well as with the automation of use cases

Are you interested in AITEZA or do you still have questions?

If you would like to try out and utilise the potential of AITEZA for yourself, or if you have any further questions about AI, please contact Philip Weyer at info@weyer-data-engineering.com

Mitarbeiterfoto Philip weyer von weyer data engineering gmbh
Philip Weyer
weyer data engineering gmbh

FAQ about AITEZA: Answers to the Most Common Questions

AITEZA is an AI business solution by weyer data engineering gmbh, which was founded in autumn 2024 and is part of the weyer group. The software was developed under the leadership of Philip Weyer and has been in use by more than 200 users since early 2025. It is licensed both internally within the weyer group and for external customers.

AITEZA is suitable for all companies that want to use artificial intelligence without compromising high data protection standards. AITEZA is particularly advantageous for document-based services.

Unlike freely accessible AI products, AITEZA protects sensitive internal data, offers traceable answers based on validated user data, and prevents data leakage or external training of AI models with company data.

AITEZA exclusively uses data provided by the company. There is no sharing with third parties, ensuring NDA compliance and data sovereignty. This security is not only contractually guaranteed but also technically enabled through optional on-site deployment of the software.

Users can switch between different Large Language Models (LLM) via a standardized interface at any time to work on tasks with specialized models. These models include:

GPT-4o DeepSeek R1 Claude 4 Sonnet Mistral Large 3

→ AITEZA can be expanded with additional LLMs at any time. LLMs that suit you can be integrated into the LLM router of AITEZA upon your request.

The web-based platform allows the upload of data in common formats, such as PDF, Word, Excel, JPG or PNG. Large data sets are structured hierarchically and can be uploaded via drag-and-drop. The integrated vector embedding system ensures semantic indexing of all content.

Through automation tools like n8n and a REST API in AITEZA, third-party software solutions can be easily connected to AITEZA. Middleware integration enables the connection of your existing data and automated workflows.

AITEZA has an intuitive web interface, provides easy access to past chats, and permanently stores conversation histories – ideal for repeated use.

Since only validated, deliberately provided data is used in AITEZA’s retrieval-augmented generation (RAG) pipeline, hallucinations are minimized. Our prompt engineering strategies and efficient context retrieval mechanism ensure precise, verifiable answers that can be traced directly to the data source. Our advanced retrieval algorithm optimizes semantic relevance and minimizes information loss in complex queries.

Yes, each answer can be traced back to the original document. This offers transparency and traceability.

Access management is done through separate accounts for your users with defined permission levels (e.g. viewer, editor, owner) for user groups. This way, you have full control over access to data rooms. It is also possible to use your company’s identity provider, such as Microsoft Entra ID or Google, for single sign-on (SSO) and login to AITEZA.

Usage of AITEZA is typically billed via a license with a defined number of users and duration. Upon request, we also offer individual models tailored to your specific requirements.

AITEZA offers a user-based, monthly license structure. Additionally, one-time costs for setup and training apply. Operating costs for hosting the software and using AI models from third-party providers are passed on without markup. Your total costs consist of the following components:

Monthly license fee: This fee depends on the number of users and the chosen license (Standard / Enterprise). One-time setup costs: These cover the initial setup and training. Monthly operating costs: These vary depending on the hosting option and number of users.

For detailed pricing information, please contact us directly to receive an offer tailored to your needs.

AITEZA is ideal for AI-supported knowledge management, document review, professional support in project management, and cross-project data analysis.

The ability to integrate various LLMs depending on the task makes the solution open to technological developments and prevents vendor lock-in. With the weyer group as the initial licensee of the software, the development of AITEZA is secured for the coming years.

Interested parties can contact Philip Weyer directly at info@weyer-data-engineering.com or book an appointment through the following link to request a demo of our solution and receive free test access: Request demo

Yes, structured data rooms enable the secure sharing of knowledge between departments or companies under access rights.

Due to complete control over the data base and traceable results, AITEZA is particularly suitable for industries with high compliance or NDA requirements.

Weyer data engineering gmbh offers guidance in implementation, user training, and automation of use cases for a successful rollout.

Yes, you can upload and structure your own documents. AITEZA works exclusively with the data you provide, whether it’s your own materials or project documentation.

Entry is usually possible within a few days. After a brief setup and introduction, you can start working with your own data immediately.

No, you can upload your data directly in its existing structure. AITEZA automatically processes common formats and reliably recognizes complex documents.

Your data remains completely with you. AITEZA operates without cloud compulsion and does not pass any information on to third parties or external servers. The system complies with common NDA and data protection requirements.

AITEZA always uses the data you provide. If regulations change, you can upload the new content yourself. This way, you retain full control over the currentness.

Yes, multiple users can access the system simultaneously. With individual roles and rights, you can precisely control who can see and edit what.

AITEZA can be seamlessly integrated into existing IT structures via interfaces (e.g. API) and can be operated locally or server-based, according to your requirements.

AITEZA is not an open consumer AI but a closed business platform. It is based on your own data, is traceable, data-secure, and optimized for professional applications.

Yes, gladly! Upon request, we offer a demo version to test AITEZA in your environment.

AITEZA is also suitable for small teams. The platform can be integrated into existing work processes without much implementation effort. Even with few users, you benefit from structured knowledge management, fast search functions, and data-secure AI support

AITEZA is particularly strong in technical and regulatory environments but can fundamentally be used for any structured knowledge base, such as HR, marketing, sales, compliance, or controlling.

Yes, AITEZA allows the creation of separate data rooms. This way, projects, departments, or clients can be structured and cleanly separated from each other.

Support is provided directly by weyer data engineering gmbh. You receive personal contact persons, quick responses, and technical support.

Yes, that is one of the strengths of the platform. AITEZA can analyze content, summarize it, or create precise reports from multiple documents.

No, AITEZA is centrally maintained and developed. You receive automatic updates without any effort.

Yes, AITEZA can work with content in different languages as long as the documents are well-structured and readable. The main interface is available in English.