Cookie policy

In short

We use the minimum browser storage the site needs to work. We load measurement (analytics) and advertising tools only with your consent. If you do not consent, none of these tools are loaded.

Necessary

Used to make forms work and to remember your choice; cannot be switched off and needs no consent. These records stay on your device and are not sent to us.

"castintech-consent-v1" (local storage): your cookie choice.
"ct-taslak-…", "ct-anahtar-…", "ct-sayilan-talepler" (session storage): to keep what you typed in a form when the page reloads, to avoid saving the same request twice and to count requests; deleted when the tab closes.

Campaign information

If you arrive through a campaign link, the campaign parameters in the link (utm_*) and the landing page are kept in your browser as "castintech-attribution-v1". They are sent to us only with a form you submit; they are not sent to measurement tools.

If you have not chosen or have not allowed analytics: kept for this session only, deleted when the tab closes.
If you have allowed analytics or advertising: kept for 30 days.
If you decline or withdraw consent: the 30-day record is deleted immediately.

Analytics (only with your consent)

Used to understand how the site is used and to improve pages and forms. Loaded only if you allow "Analytics".

Google Analytics 4 — provider: Google Ireland Limited. Cookies: _ga, _ga_<id> (castintech.com) — to distinguish visits and sessions and measure which pages are used; up to 2 years (your browser may keep it for less).
Microsoft Clarity — provider: Microsoft Corporation. _clck (castintech.com): to distinguish visitors, 1 year. _clsk (castintech.com): to group the pages of one visit into a single session, 1 day.
Microsoft Clarity — cookies on Microsoft domains: CLID (clarity.ms) to recognise when Clarity first saw the visitor, 1 year; MUID and SRM_B, Microsoft’s browser identification cookies, about 13 months; MR, to decide whether MUID is refreshed, 7 days; ANONCHK, an internal Microsoft check, a few minutes; SM, synchronisation across Microsoft domains, browser session.

Clarity session recording and retention

Clarity measures on-page interaction (clicks, scrolling) and heatmaps, and keeps a session recording of how you move through the page. Form fields and fields containing personal information are masked in session recordings.

Microsoft does not publish the durations of Clarity cookies; the durations above were measured on 10 October 2026 and may be changed by the provider.

Retention: Google Analytics event data is kept for 14 months. Clarity session recordings are kept for 30 days, click and heatmap data for 9 months.

Advertising (only with your consent)

Used to measure how our ads lead to site visits, enquiries and purchases, and to reach people who visited our site again on advertising platforms. Loaded only if you allow "Advertising".

When you allow advertising, the platforms’ tags may store the ad click ID in the address bar (gclid, fbclid) in their own cookies. Our own contact form does not collect these IDs or store them with your enquiry.

Without advertising consent, Google Analytics still works (if you allowed analytics), but no advertising storage or ad personalisation consent is sent to Google and no advertising cookies are set.

Google Ads — provider: Google (the Google company that is party to our Google Ads agreement). _gcl_au (castintech.com): to link an enquiry or purchase made after an ad click to that ad, 90 days. _gcl_aw (castintech.com): only if you arrived by clicking a Google ad, to store the click ID, 90 days.
Meta Pixel — provider: Meta Platforms, Inc. _fbp (castintech.com): to distinguish the browser in Meta ad measurement, 90 days. _fbc (castintech.com): only if you arrived by clicking a Meta ad, to store the click ID, 90 days.

Tag manager and consent mode

Measurement and advertising tools are loaded through Google Tag Manager. The tag manager itself sets no cookies and is loaded only after you allow analytics or advertising. Google tools receive your consent status through Google’s consent mode; each consent type (analytics, advertising) is passed separately.

Processing outside Türkiye

Google, Microsoft and Meta may process the measurement and advertising data they collect with your consent outside Türkiye. Without your consent these tools are not loaded and receive no data.

Cache and service worker

The site uses a service worker that clears caches left in your browser by an earlier version. This collects no personal data.

Managing your choice

You can switch analytics and advertising on or off separately at any time through "Cookie preferences" at the bottom of the page. When you withdraw consent, the related tools are no longer loaded from the next page load; the campaign record and the related cookies set on our domain (_ga, _ga_<id>, _clck, _clsk, _gcl_au, _gcl_aw, _fbp, _fbc) are deleted. Our site cannot delete cookies on Microsoft or Meta domains; you can delete them in your browser settings.

You can delete or restrict cookies in your browser settings. Some features may not work properly with cookies switched off. For questions, write to [email protected] or use the contact page.

See our privacy policy and the KVKK information notice for how personal data is processed, and our data deletion page to have your data deleted.