feat: Add 'Build vs Buy in 2026' comprehensive guide#980
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bobbyonmagic merged 3 commits intomainfrom Mar 3, 2026
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Adds third long-term blog post from Issue #868 covering build vs buy decisions for infrastructure tooling. Key sections: - True cost formula (initial + maintenance + opportunity cost) - 8 infrastructure categories analyzed (identity, CI/CD, observability, secrets, feature flags, load balancing, messaging, IDPs) - Decision framework flowchart - Real-world scenarios (Series A/B/C with actual cost calculations) - Common mistakes and when building actually makes sense All pricing verified for 2026, math calculations validated, includes OG images for social sharing.
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- Scenario A: K8s setup cost corrected from $100K-$150K to $67K-$100K - Scenario C: Initial build cost corrected from $600K-$1M to $900K-$1.6M - Scenario C: 3-year TCO corrected from $3.2M-$4M to $3.3M-$4.6M - Updated cost multiplier claim from 2-3× to 2-4× (accurate) All calculations now align with stated engineer-months and $16.7K/month rate.
- Auth0: Changed from $240-$2,400/year (10K-100K MAU) to $500-$5K/year (10K-25K MAU) * Upper bound was 23× too low - 100K MAU actually costs ~$56K/year * Adjusted range to reflect more accurate small-medium scale pricing - GitLab CI: Fixed from $19-$99/user/year to $19-$99/user/MONTH * Critical error - was off by 12× * GitLab Premium/Ultimate are priced monthly, not annually - HashiCorp Vault: Changed from "$0.03/hour per secret" to "$0.30-$2.50/hour per cluster" * HCP Vault prices per cluster instance, not per secret * Annual estimate ($15K-$40K) remains accurate All other pricing claims remain verified as accurate.
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Closes #868 (part 3 of 24)
Summary
Adds third long-term blog post from Issue #868: Build vs Buy in 2026: What Still Makes Sense to Build In-House?
What's Included
Core Content
Key Sections
Pricing & Math Verified
Example Calculations
Internal CI/CD Platform (20-engineer team):
Internal Developer Platform (60 engineers):
Target Audience
Validation
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