In case of doing so, here are some of the top reasons why other companies are doing that:

1. If you feel that your team is opinionated to not using Backstage due to it’s dependency on Javascript

2. If you have too many internally built tools for CI / CD and usual developer workflows and not too many options in Backstage plugins

3. If your team’s size can justify dedicating a few full-time resources to building it internally.

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While building an internal developer portal in-house for scaffolding and developer self-service might be a suitable option, it is worth re-evaluating the cloud tools available given the extensive integrations with other commercial SaaS offerings that they have in the market.