Data sovereignty starts in the infrastructure: this category gathers our articles on Supabase and PostgreSQL, Keycloak and identity management, self-hosting on Hetzner, Next.js architecture and performance. The common thread: European data sovereignty, transparent operating costs and open-source stacks you own instead of rent.
Published German price ranges for the same project class run from €15,000 to €150,000. Hourly rates explain only a factor of 2.6 of that; the rest is unspoken scope. To make quotes comparable, define integrations, roles, migration, acceptance and operations first — instead of negotiating the rate. Running costs are the easiest thing to underestimate.
Matthias Radscheit
Custom software is built for one specific client, not an anonymous market. It pays off when a process explains your margin, when three or more systems have to stay in sync, or when many people use it: license costs scale per head, development costs do not. For non-differentiating processes, off-the-shelf wins clearly.
Matthias Radscheit
The incremental path from JavaScript to TypeScript: a six-stage plan from allowJs to the CI gate, the right order for the strict flags, honest effort figures from the Airbnb, Stripe, and Pinterest migrations — and the cases where you are better off not migrating.
Matthias Radscheit
Roughly 38 percent of all PHP websites run without security patches. This guide shows IT leaders the path from legacy PHP to a TypeScript stack — without a big bang: decision criteria, five migration steps, and honest cost ranges.
Matthias Radscheit
The decision for NestJS has been made — but what does the path look like? Pattern mapping, a five-step migration sequence, team realities, and honest exclusion criteria: the practical guide for IT decision-makers, without a code tutorial.
Matthias Radscheit
Published customer portal prices range from €12,000 to over €300,000 — because they describe three different project classes. We publish our price anchors, break down the running costs, and show the threshold at which custom development becomes cheaper than SaaS.
Matthias Radscheit
Make or buy for a customer portal isn't a feature question — it's a question of cost trajectories: list prices as of July 2026, five decision criteria, an honest 5-year calculation, and when the hybrid path beats both.
Matthias Radscheit
Keycloak replaces Auth0, Okta & co. as self-hosted identity and access management – without per-user license costs. What the open-source IAM means for decision-makers: substitution, advantages, GDPR, cost.
Matthias Radscheit
Commercial support for Spring Boot 2.7 ends on December 31, 2026 — and the entire 3.x line is already without open-source patches. The sober decision tree: Boot 4, extended support, or a service-by-service TypeScript rebuild.
Matthias Radscheit
"Our ERP can't do that" is the most common objection to a customer portal — and it's almost always wrong. How SSO with Keycloak and four integration patterns connect portals to legacy systems without touching the old system at all.
Matthias Radscheit
Real price ranges for TypeScript and Node.js projects in 2026 — plus the TCO math showing what the comparable Java stack adds in operating costs, and when it should stay anyway.
Matthias Radscheit
Medusa is PostgreSQL-native and fully self-hostable. On Hetzner with Coolify and Docker the commerce stack runs GDPR-compliant in Germany, and it beats SaaS plus transaction fees above a clear revenue point. What the switch really costs, and when it pays off.
Matthias Radscheit
Performance is not frontend cosmetics. It is a business metric. Treat Core Web Vitals as a technical detail and you leave both ranking and revenue on the table. Why Next.js gives you the best starting conditions, and why that alone guarantees nothing.
Matthias Radscheit
Vercel is convenient and sits under US law. Next.js is open source and runs self-hosted on Hetzner with Coolify and Docker, stably, from around 39 euros a month. Why data sovereignty isn't optional for serious organisations but a requirement, and what the switch honestly costs.
Matthias Radscheit
Almost everyone who migrates from Firebase to Supabase underestimates the same block: not auth, not storage, but reshaping denormalised Firestore collections into normalised Postgres tables with RLS. An honest account of where the time and money actually burn — and which apps should not migrate at all.
Matthias Radscheit
No vendor writes the TCO comparison between Supabase Cloud and self-hosted on Hetzner. Past a certain usage profile, self-hosting saves real money — but only if you price your internal operating hours at a real rate. Skip that, and the saving is an accounting illusion.
Matthias Radscheit
For most enterprise use cases, a separate vector database is a problem you buy back into your own stack. Why Supabase with pgvector and Edge Functions is a consolidation decision, not a hype one — and where the honest limit actually sits.
Matthias Radscheit
Comparing Supabase and Firebase on features means comparing the wrong dimension. For European companies under GDPR, this is a sovereignty and risk decision: a US corporation under the CLOUD Act versus open PostgreSQL with a real exit. A practitioner's take.
Matthias Radscheit
Nearly 30 percent of Java production applications still run on Java 8, according to New Relic — and every new product idea is queued behind the migration. Two-speed IT breaks the gridlock: greenfield products on a TypeScript stack, docked onto the core via API contracts.
Matthias Radscheit
NestJS brings the enterprise patterns familiar from Spring to the TypeScript backend. The comparison for IT decision-makers: architecture, support cycles, talent pool, and costs — plus when Spring remains the right choice.
Matthias Radscheit
Feature comparisons don't answer the stack question. This TCO comparison works through the four cost blocks that actually hit IT decision-makers — license and audit risk, talent, support cycles, and operations — and says honestly when the JVM wins.
Matthias Radscheit
Matthias Radscheit
Supabase Row Level Security moves access control out of application code and into the database. The forgotten filter stops being a bug you avoid through discipline and becomes structurally impossible. For multi-tenant SaaS, that is a question of risk and speed that belongs on a decision-maker's desk.
Matthias Radscheit
Matthias Radscheit
For websites that regularly face high visitor traffic, a reliable and performant content platform is essential. In this context, Sanity.io has proven to be particularly powerful.
Matthias Radscheit
Sanity.io is a modern headless CMS that particularly excels in projects with high traffic volumes. In this article, we present successful high-traffic websites that rely on Sanity.io and explain why Sanity.io is the optimal choice for these projects.
Matthias Radscheit
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