A practical, end-to-end guide to working productively on a .NET Framework 4.8 / IIS / SQL Server app in 2026 — workstation setup, isolated local development with Docker Windows containers, per-developer databases, web.config transforms, build pipelines, Web Deploy / Octopus deployment patterns, and the realistic modernization on-ramp.
Legacy
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.NET Framework 4.8 + IIS + SQL Server: A Modern Development and Deployment Workflow for Legacy Apps -
Strangler Fig for Legacy Migrations: Replacing Systems Without the Big Rewrite How to replace a legacy system incrementally with the strangler fig pattern — routing traffic through a façade and migrating functionality piece by piece — instead of betting the company on a multi-year big-bang rewrite.