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The Datahash blog.
First-party data, server-side integrations, and everything that makes paid media measurable.
Reading for the people who own the number.
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how-to
CAPI for e-commerce: the implementation guide
E-commerce is where server-side tracking pays fastest, because the conversion event has value, currency, and identity attached, and because browsers lose exactly those events.
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opinion
You have a CDP. Why is your match rate still low?
A CDP collects, unifies, and stores. Delivering to ad platforms in each platform's dialect is a different job, and it is the one most destination catalogs do badly.
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opinion
A CMO playbook for the era after third-party cookies
We first published this in 2023, when post-cookie was a forecast. It is now just the environment. Here is what a marketing leader controls, in the order it pays.
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opinion
Consent done right is a growth lever
The compliance framing of consent is table stakes. The performance framing is underrated: consented, well-recorded data is the only data platforms will fully use.
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how-to
The first-party data playbook: collect, activate, measure
Everyone agrees first-party data matters. The gap is between collecting it and getting paid media value from it, and that gap has three stages.
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how-to
GA4 server-side: what it fixes and how to run it
GA4's default client-side collection loses events to the same browser pressures as every pixel. Moving collection server-side restores completeness and puts consent enforcement in one place.
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product
Hashing and encryption in data activation
Hashing and encryption both protect customer identifiers in marketing data pipelines, and they do different jobs. Here is what each one covers and where each one stops.
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how-to
Meta Lead Ads end to end: capture, sync, optimize on quality
Meta Lead Ads remove the landing page from lead gen. Volume rises, cost per lead falls, and lead quality becomes your problem to manage. This guide is the full loop.
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industry
Prepping for the cookie crumble, revisited
We published the original version of this post when Chrome still had a deadline for killing third-party cookies. The deadline moved. The advice did not. Here is the 2026 checklist.
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industry
The privacy regulation map for marketers
Five regimes decide how your ad stack must behave: GDPR, ePrivacy, DMA, DSA, and CCPA/CPRA. This is the working map, not legal advice.
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product
Measuring Snap campaigns after third-party cookies
Third-party cookies stopped being a dependable measurement layer long before anyone officially retired them. Snap's Conversions API replaces them with a server-side connection built on consented first-party data.
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product
Snap app campaigns after iOS 14.5: where measurement stands
iOS 14.5 took device IDs away from app advertisers in 2021. SKAdNetwork filled part of the gap with aggregate attribution. Snap App CAPI restores the server-side conversion signal that campaigns optimise on.
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product
Measuring the offline impact of your Snap campaigns
Shopping journeys increasingly start online and end at a till, where ad platforms cannot see them. Snap Offline CAPI closes that gap by sending store conversions from your CRM directly to Snap.
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how-to
TikTok Events API: the implementation guide
TikTok's Events API is its server-side path for web, app, and offline signals, and TikTok's optimization responds sharply to signal quality because its delivery is so model-driven.
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opinion
Who owns first-party data strategy: the CMO, the CTO, or the CIO?
Most companies agree they need a first-party data strategy. Fewer agree on who owns it. The honest answer is three people, and the split of responsibilities is the strategy.
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how-to
Consent Mode v2 without breaking Google Ads optimization
Consent Mode v2 has been mandatory for EEA and UK ad personalization since March 2024, and it is still the most common thing we find broken in Google Ads accounts.
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opinion
Data Strength, explained for CMOs
Your Google team has started saying "Data Strength" in QBRs. Here is what they mean and what to do about it, in the order that matters.
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how-to
The offline attribution playbook for retail and auto
If your ads run online and your sales close in a store, a showroom, or a call centre, your ad platforms see a minority of your revenue. This playbook closes the gap.
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product
Server-side vs client-side tracking: what actually changes
Client-side tracking means the browser sends data to ad platforms. Server-side means a server you control does it. The details decide your data quality.
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opinion
Why signal quality now decides ad spend efficiency
Ad platforms are prediction machines. The quality of the examples you feed them is now the biggest lever you control, and Google Marketing Live 2026 settled the argument.
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product
What is the Conversions API? Every platform's version, explained
A Conversions API is a server-to-server connection that sends conversion events from your systems directly to an ad platform. Every major platform now runs its measurement through one. Here is how they compare.
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product
Meta CAPI Gateway vs Signals Gateway
Meta now has two self-hosted options with confusingly similar names. What each one does, how they differ, and how to pick between them and a managed platform.
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how-to
Server-side GTM vs Signals: what changes, what does not
Both move your tags off the browser. The difference is who runs the server, how destinations get maintained, and where CRM and offline data fit in.
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product
What Meta Signals Gateway actually is (and when to use it)
Meta's self-hosted signal infrastructure is powerful and widely misunderstood. Here is what it does, what it costs you operationally, and when a managed platform is the better call.
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industry
Marketers measure success differently owing to data privacy updates
A Salesforce study of 2,500 marketers finds that 90% have fundamentally changed how they measure performance since recent privacy changes, putting data quality and a centralized view of data at the center of the strategy.
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industry
In focus: marketing trends 2023
Gartner outlines five trends shaping the next few years, from AI shifting work toward analytics to loyalty programs built for first-party data, all set against a fading third-party cookie.
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industry
A study: the changing landscape in advertising and media
A Permutive and AdExchanger survey finds 98% of advertisers worried about privacy and identity changes eroding trust, and shows the industry pivoting toward direct relationships and first-party data.
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how-to
Driving customer retention and expansion in 2023
When economic pressure is high and buyer expectations are higher, the surest growth lever is your existing customer base. Here is how to speak to the moment, test new offers, and reinforce trust with clean customer data.
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industry
Digital marketing maturity and business performance in Europe
An ON24 survey of 800 marketing leaders across 12 European countries finds a strong link between digital marketing maturity and business success, with first-party data at the center of the most mature strategies.
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how-to
Delivering a consistent user experience, crucial in 2023
Unlocking first-party data is key to a consistent user experience. Here is how personalization, advertising, behavior prediction, and audience insights come together, and how to optimize the strategy behind them.
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opinion
Priorities for marketers in 2023
A set of resolutions to keep marketing teams ahead of the curve: predictive lifetime value, demonstrating value to customers, creative testing, testing new platforms, and improving first-party data systems.
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industry
Strong first-party data collection means better audience profiles, ABG reports
Research from the Advertising Business Group and Ipsos in the GCC finds that the stronger your first-party data, the stronger your audience profiles, and outlines five elements that will shape a privacy-first future.
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opinion
Opinions: 2023 predictions for first-party data, walled gardens, and the open web
Privacy regulation and the deprecation of third-party cookies are pushing marketers toward proprietary identity. Industry experts share what they expect for the open web and the walled gardens in 2023.
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industry
IAB research reveals more than 90% of advertisers partner with retailers to reach consumers
An IAB Europe study with Microsoft finds 92% of advertisers already partner with retailers, drawn by clean first-party data and closed-loop measurement, even as scale and integration remain barriers.
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industry
What marketers need to prepare for in 2023
The phase-out of third-party cookies changes how marketers target and measure. The first step is understanding what cookies do in your campaigns today, then building a first-party data strategy around transparency and value.
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industry
88% say that first-party is more important to organizations than two years ago
An Acquia study of 2,000 consumers and 200 marketers found direct customer relationships now give organizations an edge, but collecting first-party data and protecting it are two different disciplines.
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