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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryIT & CommunicationIT Consulting & ServicesLachen SzDiag Dienstleistungen AG
Diag Dienstleistungen AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company provides services in the field of Information and Communication Technology (ICT), particularly: hosting of ICT systems in redundant data centers, purchase and rental of ICT systems, cloud services, including Microsoft 365, IT consulting and support, network and security solutions, and protection and security of digital information. The company positions itself as an ICT specialist and offers its customers a comprehensive range of services to support and secure their ICT infrastructure.

AI-generated
Offering

Products & services

Industry:IT Consulting & ServicesIT Infrastructure & Cloud
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4.2/5

Diag Dienstleistungen AG

✓ Offered7
Hosting
Professional hosting in redundant data centres, including hosting infrastructure, data backup, replication, migration of existing data, and a protected environment with firewalls and security appliances.
Purchase of ICT systems
Purchase of ICT systems with needs analysis, selection of suitable technologies and providers, as well as implementation, integration and long-term support for operating the ICT infrastructure.
Rental of ICT systems
Rental of ICT infrastructure according to individual requirements, including analysis, design, operation, maintenance, updates, as well as regular monitoring and security measures.
Microsoft 365
Consulting, implementation and ongoing support for Microsoft 365, including integration into existing IT infrastructure, with assistance for Teams, SharePoint, OneDrive and Outlook.
vCloud
Cloud migration of the IT infrastructure with scalable, highly available and secure vCloud solutions, as well as easy management, fast provisioning and support.
Synology solutions
Set-up, optimization and secure integration of Synology NAS systems into the network, including data management, backups, scaling and applications such as file and media servers.
Telephony
Voice-over-IP, modern telephone systems, Audiotex platforms, fax servers and alarm notification systems with local, virtual or cloud-based operation, as well as provider connectivity.
Trust & reputation

ranQ Trust Score of Diag Dienstleistungen AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Diag Dienstleistungen AG scores 63.5 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.56.124%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.55.910%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.95.08%
Diag Dienstleistungen AG scores 89.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.70.07%
Diag Dienstleistungen AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Diag Dienstleistungen AG scores 77.1 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.77.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Diag Dienstleistungen AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 3.9 out of 5 stars from 8 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
3.9
of 5

Aggregated from 8 reviews across all connected sources

Sources
GGoogle3.98
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Alpenblickstrasse 20
8853 Lachen Sz
Opening hours
Mon
08:00 - 12:00, 13:30 - 17:00
Tue
08:00 - 12:00, 13:30 - 17:00
Wed
08:00 - 12:00, 13:30 - 17:00
Thu
08:00 - 12:00, 13:30 - 17:00
Fri
08:00 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-103.043.414
Founded
1979 · 47 years
Last commercial register change
June 23, 2025
Employees
11 to 20
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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