9 articles
How to Deal with a Shortage of User Data and Interpret It Correctly →
GDPR, cookie banners, ad blockers and other tools are restricting the storage of data about users and their behaviour on websites. This means less and less user data — yet you still need it for website development, its functioning and evaluating goal performance. Read how to extract what matters even from less data and how to correctly interpret information.
Ondřej Švec3 min read
28. 5. 2026

Practical tips, inspiring stories and real-life experiences from the world of CX, business, strategy and design. The podcast is hosted by Robin Janásek, an experienced strategist, designer and mentor.

ROBIN JANÁSEK
Head of Research & Design
How to Estimate and Retrospectively Calculate the Return on Investment for a Website or E-shop →
The success of work is usually measured by goal achievement (for example the required website performance) and by calculating return on investment. This also serves as a benchmark for estimating ROI on similar projects in the future. How should you approach calculating return on investment?
Proof & Reason3 min read
28. 5. 2026
Delivering Value and Working with Uncertainty →
Much as I am not a winter person (the last time I stood on skis was on a school trip in seventh or eighth grade), I have been looking forward to the turn of January and February for several years now. I take a week off work and head to one of the Hungarian hilltop venues, where I spend a week locked away with the most interesting minds in web analytics from around the world.
Proof & Reason5 min read
28. 5. 2026
Cookie Consent Is Now Non-Negotiable →
On 27 September 2021, the President of the Czech Republic signed an amendment to the Electronic Communications Act. Changes that may affect you and your website come into force on 1 January 2022. There are mainly two points, and both share a common denominator: active consent.
Proof & Reason2 min read
28. 5. 2026

