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Blog

Tech42 Blog — from the workbench.

Practical insights on software architecture, cloud, engineering, and the reality of modern software development — straight from our daily work.

Articles

What we learn, we write down.

Laptop showing the weekly calendar of the multi-tenant SaaS TrainerFoundry next to a phone with the client app; on the right, a cloud with three separate trainer tenants on one shared platform.
· 6 min read · Software Architecture / Monolith / .NET / Azure

Building a multi-tenant SaaS: what TrainerFoundry taught us

Inside the engine room of TrainerFoundry: a modular monolith, tenant isolation, two separate money flows — and five lessons for your own SaaS.

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Modular monolith versus microservices — architecture comparison across scaling, complexity, and team setup.
· 9 min read · Software Architecture / Microservices / Monolith

Modular monolith vs. microservices: which architecture fits your project?

Microservices sound modern — but they're not the right call for every project. A sober comparison of both architectures, with clear recommendations for when to use which.

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Azure Key Vault — central, secure storage of API keys, passwords, and certificates.
· 7 min read · Azure / Cloud Security / .NET

Storing secrets and keys securely with Azure Key Vault

API keys, passwords, and certificates don't belong in config files or source code. How Azure Key Vault centralises sensitive data securely — and how we wire it cleanly into .NET applications.

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Requirements and user stories — bridging technical specifications and user perspective.
· 6 min read · Requirements Engineering / User Stories / Agile

Requirements vs. user stories: where the real difference lies

Requirements and user stories are often used interchangeably in projects — and that costs clarity. What each actually delivers, where they complement each other, and when which form gets you to the goal.

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Software erosion visualised: crumbling code beside dashboards showing rising maintenance costs, more bugs and declining velocity.
· 11 min read · Software Quality / Technical Debt / Legacy Modernization / Software Architecture

Software Erosion: A Silent Threat to Long-Term Software Quality

Software erosion costs more long-term than any single bug. How to spot it early, what the silent decay really costs, and how to stop it.

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