Third-Party Services

This page provides a transparent overview of third-party services that may be used in connection with this website.

It supplements the Privacy Policy and the Cookie Policy.

Third-party services are used only where they are useful for operation, security, technical administration, contact, analytics, improvement or professional visibility of the website.

Non-essential analytics, interaction and marketing services are activated only after your consent.

Provider:
Vercel Inc.
440 N Barranca Ave #4133
Covina, CA 91723
USA

Purpose:

• hosting,
• delivery of the website,
• performance,
• technical logs,
• security,
• error analysis,
• optional Vercel Analytics.

Possible data:

• IP address,
• request data,
• timestamps,
• browser and device information,
• technical diagnostic data,
• aggregated usage data when Vercel Analytics is used.

Legal basis:

• Article 6(1)(f) GDPR for hosting and technical provision,
• where applicable, Article 6(1)(a) GDPR for optional analytics configurations requiring consent.

Further information:
https://vercel.com/legal/privacy-notice
https://vercel.com/docs/analytics
https://vercel.com/docs/analytics/privacy-policy

Provider:
Squarespace Ireland Limited
Squarespace House
Ship Street Great
Dublin 8
Ireland

Purpose:

• domain registration,
• domain management,
• DNS-related functions.

Possible data:

• administrative domain information,
• technical DNS-related information,
• account and administrative data on the operator side.

Legal basis:

• Article 6(1)(f) GDPR.

Further information:
https://www.squarespace.com/privacy

Provider:
GitHub, Inc.
88 Colin P. Kelly Jr. Street
San Francisco, CA 94107
USA

Purpose:

• source code management,
• version control,
• technical documentation,
• technical publication process.

When the website is merely visited, no content is generally loaded directly from GitHub.

Legal basis:

• Article 6(1)(f) GDPR.

Further information:
https://docs.github.com/en/site-policy/privacy-policies/github-general-privacy-statement

Provider:
Tally BV
August Van Lokerenstraat 71
9050 Ghent
Belgium

Purpose:

• contact form,
• structured submission of enquiries.

Possible data:

• name,
• email address,
• message,
• voluntary information,
• IP address and technical metadata,
• time of submission.

Legal basis:

• Article 6(1)(f) GDPR,
• where applicable, Article 6(1)(b) GDPR for pre-contractual enquiries.

Further information:
https://tally.so/help/privacy-policy
https://tally.so/help/gdpr
https://tally.so/help/data-processing-agreement

Provider:
Google Ireland Limited
Gordon House
Barrow Street
Dublin 4
Ireland

Purpose:

• web analytics,
• aggregated usage statistics,
• technical and content optimisation.

Possible data:

• page views,
• interactions,
• referrers,
• device and browser data,
• approximate location data,
• pseudonymous identifiers,
• technical event data.

Activation:

• only after consent to the Statistics category.

Legal basis:

• Article 6(1)(a) GDPR,
• Section 25(1) TDDDG.

Further information:
https://support.google.com/analytics/answer/6004245
https://support.google.com/analytics/answer/12017362

Provider:
Google Ireland Limited
Gordon House
Barrow Street
Dublin 4
Ireland

Purpose:

• management and triggering of tags,
• consent-based control of optional services.

Google Tag Manager is not an end in itself, but infrastructure for the controlled integration of other tags.

Activation:

• optional tags are triggered only after the relevant consent has been given.

Legal basis:

• depending on the tags triggered,
• for optional tags Article 6(1)(a) GDPR and Section 25(1) TDDDG.

Further information:
https://support.google.com/tagmanager/answer/10718549

Provider:
Microsoft Ireland Operations Limited
One Microsoft Place
South County Business Park
Leopardstown
Dublin 18
Ireland

Purpose:

• heatmaps,
• session replays,
• analysis of click, scroll and interaction behaviour,
• improvement of usability and website experience.

Possible data:

• interaction events,
• page views,
• technical device information,
• session information,
• mouse, click and scroll behaviour,
• masked or suppressed content depending on configuration.

Activation:

• only after consent to Usability and Interaction.

Legal basis:

• Article 6(1)(a) GDPR,
• Section 25(1) TDDDG.

Further information:
https://clarity.microsoft.com/privacy
https://learn.microsoft.com/clarity/faq

Provider:
Contentsquare SAS
7 rue de Madrid
75008 Paris
France

Purpose:

• heatmaps,
• session replays,
• UX analytics,
• identifying points of friction,
• improving reading flow, navigation and operability.

Possible data:

• interaction data,
• clicks,
• scrolling behaviour,
• technical device information,
• session information,
• first-party cookies or local storage entries,
• masked or suppressed content depending on configuration.

Activation:

• only after consent to Usability and Interaction.

Legal basis:

• Article 6(1)(a) GDPR,
• Section 25(1) TDDDG.

Further information:
https://www.hotjar.com/privacy/gdpr-compliance/
https://help.hotjar.com/hc/en-us/articles/36820004397713-Privacy-FAQs
https://contentsquare.com/privacy-center/cookie-policy/
https://docs.contentsquare.com/en/web/cookies/

Provider:
Cloudflare, Inc.
101 Townsend St.
San Francisco, CA 94107
USA

Purpose:

• privacy-first web analytics,
• aggregated usage and performance information.

Cloudflare describes Web Analytics as a privacy-friendly service that can be used without cookies and without local storage.

Activation:

• depending on technical configuration,
• transparently listed under Statistics.

Legal basis:

• Article 6(1)(f) GDPR where cookie-free and without personal tracking,
• otherwise Article 6(1)(a) GDPR and Section 25(1) TDDDG.

Further information:
https://www.cloudflare.com/web-analytics/

Provider:
Vercel Inc.
440 N Barranca Ave #4133
Covina, CA 91723
USA

Purpose:

• aggregated web analytics,
• performance and visit statistics.

Vercel states that Web Analytics stores anonymised data and does not use cookies.

Activation:

• depending on technical configuration,
• transparently listed under Statistics.

Legal basis:

• Article 6(1)(f) GDPR where cookie-free and without personal tracking,
• otherwise Article 6(1)(a) GDPR and Section 25(1) TDDDG.

Further information:
https://vercel.com/docs/analytics
https://vercel.com/docs/analytics/privacy-policy

Provider:
Umami / Umami Cloud or self-hosted instance

Purpose:

• privacy-focused web analytics,
• aggregated visit statistics,
• technical and content improvement.

Depending on configuration, Umami can be operated without cookies and without storing directly identifying visitor data.

Activation:

• depending on technical configuration,
• transparently listed under Statistics.

Legal basis:

• Article 6(1)(f) GDPR where cookie-free and without personal tracking,
• otherwise Article 6(1)(a) GDPR and Section 25(1) TDDDG.

Further information:
https://umami.is/
https://umami.is/docs

Provider:
LinkedIn Ireland Unlimited Company
Wilton Place
Dublin 2
Ireland

Purpose:

• professional reach analytics,
• aggregated campaign analytics,
• conversion and audience insights in the LinkedIn context.

Possible data:

• page views,
• URL,
• referrer,
• IP address,
• device and browser information,
• cookie or pixel identifiers,
• possible linking to LinkedIn member accounts by LinkedIn.

Activation:

• only after consent to Marketing / Professional Reach.

Legal basis:

• Article 6(1)(a) GDPR,
• Section 25(1) TDDDG.

Further information:
https://www.linkedin.com/help/lms/answer/a489169
https://www.linkedin.com/legal/privacy-policy
https://www.linkedin.com/legal/cookie-policy
https://www.linkedin.com/legal/l/cookie-table

Provider:
Resend, Inc.
USA

Purpose:

• transactional email delivery,
• responding to contact requests,
• system- and process-related notifications.

Possible data:

• recipient address,
• name where provided,
• subject and content of the message,
• sending timestamps,
• technical delivery and log data.

Legal basis:

• Article 6(1)(b) GDPR when handling requests,
• otherwise Article 6(1)(f) GDPR.

Further information:
https://resend.com/legal/privacy-policy

Provider:
Axiom, Inc.
USA

Purpose:

• server-side structured logging,
• operational and error analysis,
• security and stability.

Possible data:

• route called,
• HTTP method and status code,
• processing duration,
• time of the event.

IP addresses, user agents, cookies and request parameters are not logged.

Legal basis:

• Article 6(1)(f) GDPR.

Further information:
https://axiom.co/privacy

Provider:
Functional Software, Inc. (Sentry)
San Francisco, CA
USA

Purpose:

• error and crash monitoring,
• performance and stability analysis,
• session replay for usability and interaction analysis.

Possible data:

• error and event data,
• device, browser and diagnostic data,
• page context,
• session replays that are masked by default.

Legal basis:

• Article 6(1)(f) GDPR for technical error monitoring,
• Article 6(1)(a) GDPR and Section 25(1) TDDDG for session replay in the browser.

Further information:
https://sentry.io/privacy/

Provider:
UptimeRobot

Purpose:

• external availability checks,
• uptime monitoring.

Possible data:

• availability status,
• response times,
• times of the checks.

The service is not embedded in the website; no code runs in visitors' browsers.

Legal basis:

• Article 6(1)(f) GDPR.

Further information:
https://uptimerobot.com/privacy/

Provider:
Better Stack

Purpose:

• external availability checks,
• uptime monitoring,
• public status page (status.jialianglai.com).

Possible data:

• availability status,
• response times,
• times of the checks,
• technical access data customary when the status page is opened.

Legal basis:

• Article 6(1)(f) GDPR.

Further information:
https://betterstack.com/privacy

This website may use the following verifications:

• Google Search Console verification,
• Bing Webmaster Tools verification,
• Baidu verification.

Purpose:

• proof of website ownership,
• indexing management,
• technical search engine analysis,
• visibility and crawling control.

Verification method:

• meta tag,
• HTML file,
• DNS record.

These verifications are not classic tracking tags for visitors. Search engines may, however, retrieve the verification information as part of their crawling and indexing processes.

Legal basis:

• Article 6(1)(f) GDPR.

This website provides an interactive map to make the approximate geographical location easier to understand. The map uses only the city/postcode-level location “90402 Nürnberg, Germany”. Any exact contact address contained in legal notices is not used as the map location.

The interactive map is loaded only when you actively open the map view. Before that point, this map feature does not initiate requests to Mapbox or OpenFreeMap. Your analytics or marketing cookie choices do not control the map feature.

Mapbox may be used for the primary interactive display. If that service is unavailable or the map cannot be loaded, an alternative display using MapLibre GL JS and map resources from OpenFreeMap may be shown. If that external display is also unavailable, a static view is shown without connecting to an external map service.

When an external map view is loaded, the respective map service may receive technical access data including:

• IP address,
• browser, device and connection information,
• request time and request metadata,
• requested map styles, tiles, fonts, sprites or similar map resources,
• the approximate map viewport around Nürnberg / 90402.

The services are used to provide a broad geographical reference and make the contact information easier to understand. The legal basis for the provision initiated by this website is Article 6(1)(f) GDPR. My legitimate interest lies in presenting the approximate location clearly and in a user-friendly manner; the external request is made only after you actively open the map view.

Further information:
Mapbox Privacy Policy: https://www.mapbox.com/legal/privacy
Mapbox Terms: https://www.mapbox.com/legal/tos
Mapbox attribution: https://docs.mapbox.com/help/dive-deeper/attribution/
MapLibre GL JS (BSD-3-Clause): https://github.com/maplibre/maplibre-gl-js
OpenFreeMap Privacy Policy: https://openfreemap.org/privacy/
OpenFreeMap attribution and licence: https://openfreemap.org/
OpenStreetMap copyright and licence: https://www.openstreetmap.org/copyright

Unsplash, Pexels and Pixabay may serve as sources for free-to-use photographs or visual materials, especially for photographic presentations on the About page.

These platforms are not used on this website as default runtime services, analytics tools, cookie providers or tracking services.

Where the relevant image files are hosted locally by this website, merely visiting the page does not create a direct connection to these image platforms.

A connection to these platforms may occur if you intentionally open a source, license, photographer or platform link. In that case, the privacy notices and terms of use of the respective provider apply.

Rights, license and source notices for such materials are explained under Licenses and Attribution.

This overview may be updated if services are removed, added, configured differently or replaced by other providers.

The current published version is authoritative.