- 10 year old codebase under active development. - 2 major versions and 4 years out of date. - Upgrade started as a half-hearted "in your free time" effort wi

- 10 year old codebase under active development. - 2 major versions and 4 years out of date. - Upgrade started as a half-hearted "in your free time" effort with no official team, or maybe 1 dev (article says both). - Upgrade included "cleaning up technical debt and improving the codebase", (you could define almost any work under that umbrella). - At the end there were only 4 devs full-time on the upgrade. I don't know of any platform that would make the above situation all that much easier...