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In plain words: what is this page about?

Here you find our articles about online shops, websites and web tech. We explain new rules, tools and good ways of working. You can filter the articles by topic. At the top of an article you find a short version in plain words. Ask us if something is still not clear.

16 min read

Logfile analysis for shops: what crawlers actually fetch

Which address a crawler requested, with which status code and how many bytes: that lives only in the access log. How a shop evaluates it and what the network-wide figures say.

15 min read

Shop email deliverability: setting up SPF, DKIM and DMARC

An order confirmation that fails to arrive produces no error in the shop. How SPF, DKIM and DMARC interlock, where a record that has grown over the years quietly becomes invalid, and what Gmail, Outlook, Yahoo and Apple require.

14 min read

End-to-End Test Automation for Online Shops

Deployment and rollback are rehearsed – the question of how a checkout defect surfaces before go-live often stays open. This guide shows the five paths that belong in automation, how a reproducible test data set comes about, why flaky tests are more dangerous than missing ones and where in the release chain the runs sit.

14 min read

Click and Collect: Store Pickup as a Considered Process

Click and collect is more than a checkbox in the cart. This article describes reservation windows, pickup deadlines, cancellation, notifications, till integration and partial pickup as one coherent process.

17 min read

Requirements Specifications: Tendering a Shop Project Properly

How to build a requirements specification that produces comparable bids: priority levels, testable requirements, interfaces and acceptance criteria.

16 min read

Reading the Slow Query Log: When the Database Is the Brake

Slow shops rarely have a visible problem, they have an expensive one. How the slow query log, measured execution plans and matching indexes reveal where the compute time actually goes.

15 min read

Accessible Documents: Invoices and Data Sheets

In most shops, accessibility work stops at the edge of the browser window. Yet the PDF invoice, delivery note, data sheet and user manual are covered as well. A review matrix that maps document type against requirement.

13 min read

Age Verification in Your Shop: Implementing Youth Protection

Youth protection does not end with a checkbox in the checkout. This article shows how range classification, checkpoint timing, handover control and documentation work together in an online shop.

13 min read

Customer Reviews: The Authenticity Notice Under German Law

The authenticity notice for customer reviews is a duty to inform, not a duty to verify. Advertising "verified reviews", by contrast, creates an obligation. Wording, visual context and implementation in the shop.