Like it or not, you already have an internal developer platform, even if your organization never set one up and doesn’t have people with “platform engineering” in their title. The real question you’re facing is whether you should use an internal developer portal on top of your platform, given it is the most mature element in the platform engineering stack.
Built by platform engineers, the platform frees developers from “glue work” and sets standards and golden paths for developers.
The developer portal will also host the software catalog, giving context to the platform state, and be responsible for triggering platform automations as part of its self-service actions.
Internal developer portals are valuable enough to drive important improvements to developer productivity and bring order to operations people.