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# Platform Engineering ROI: What it costs to build your own platform

**[The New Stack](https://daily.dev/sources/newstack)** · 9 min read · 0 upvotes · 0 comments

## Summary

Building a custom internal developer platform costs roughly $7.5 million per year in payroll alone — 60 engineers across seven product teams — totaling $37.5 million over five years. This figure is rarely visible to executives because headcount is spread across multiple cost centers. By contrast, enterprises that buy a commercial platform operate it with far smaller teams (e.g., 5 ops for 300 app teams). The post also highlights résumé-driven development as a hidden driver of DIY platform decisions, and warns of a 12–18 month velocity gap before commercial platforms outpace homegrown efforts. The practical recommendation: buy commodity infrastructure (observability, secrets, container registry), and build only the developer-facing layer — portals, golden paths, and business-specific integrations — that actually differentiates your organization.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://thenewstack.io/real-cost-diy-platform>

## Questions this post answers

### How much does it cost to build and run your own internal developer platform in-house?

A self-built internal developer platform typically requires about 60 engineers organized into roughly seven teams (infrastructure, operations, deployment, runtime/middleware, database, security, and coaching/enablement), costing around $7.5 million a year in payroll at a conservative $125,000 per engineer. Over five years that totals $37.5 million, not counting the apps the platform is meant to support.

_Weighing platform build-vs-buy costs is easier when tracking real-world ROI breakdowns on daily.dev._

### How many ops staff do companies need if they buy a commercial developer platform instead of building one?

Organizations that buy a commercial platform run with far leaner operations teams than those building in-house, based on collected ratios: examples include 16 ops staff for 6,500 developers, 5 for 2,500 developers, 6 for 1,200 developers, and similar low ratios measured by app teams (5 ops for 45 teams) or by application count (7 ops for 350 apps).

_Comparing staffing ratios helps teams sizing their own platform operations on daily.dev._

### How long does it take before a commercially bought platform outpaces a self-built one in features?

A vendor's commercial platform typically outstrips an in-house build within 12 to 18 months, according to research on DIY platform-as-a-service economics, and the gap widens over time because vendor teams are larger and their roadmaps are funded across many customers rather than one company's budget alone.

_Tracking how fast vendor platforms outpace DIY builds matters when planning a platform roadmap on daily.dev._

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---

Tags: [#kubernetes](https://daily.dev/tags/kubernetes), [#platform-engineering](https://daily.dev/tags/platform-engineering), [#internal-developer-platform](https://daily.dev/tags/internal-developer-platform)

[View this post on daily.dev](https://daily.dev/posts/platform-engineering-roi-what-it-costs-to-build-your-own-platform-5vycs1zit)

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