Calculation Methodology & Rate Card Architecture
Deterministic formulas, regional bandwidth multipliers, and empirical test bench standards powering the Daktan infrastructure model.
Operational Scope & Engineering Purpose
Daktan is an independent cloud infrastructure benchmarking utility and technical documentation resource built for systems architects, DevOps engineers, and FinOps analysts. Standard cloud vendor pricing pages frequently obscure total cost of ownership (TCO) by separating per-GB storage rates from origin cache-miss egress, lifecycle retrieval penalties, minimum object size padding, and Class A/B API request surcharges.
Daktan solves this by executing a deterministic four-vector client-side cost model paired with 18 architectural reference guides covering S3 egress mathematics, CDN cache-hit optimization, Origin Shield request collapsing, Kubernetes inter-zone routing, and VPC endpoint engineering.
Deterministic Mathematical Equations
Every projection generated on Daktan is computed in real time within the browser using the following equations:
Provider Rate Card Baseline Matrix
Provider comparisons are calibrated against published list pricing for standard US-East / EU-Central regions prior to custom enterprise commit discounts:
| Infrastructure Stack | Storage ($/GB-mo) | Origin Egress ($/GB) | CDN Edge ($/GB) | Class A / B (per 1M) |
|---|---|---|---|---|
| Cloudflare R2 + CDN | $0.0150 | $0.000 | $0.000 | $4.50 / $0.36 |
| Backblaze B2 + Bunny CDN | $0.0060 | $0.000 (Peered) | $0.010 | $4.00 / $0.40 |
| Wasabi Hot Storage + CDN | $0.0069 | $0.000 (≤1:1 Ratio) | $0.015 | $0.00 / $0.00 |
| DigitalOcean Spaces + CDN | $0.0200 | $0.010 | $0.010 | Included |
| AWS S3 + CloudFront | $0.0230 | $0.000 (To CF) | $0.042 (Blended) | $5.00 / $0.40 |
| Google Cloud Storage + CDN | $0.0200 | $0.085 | $0.035 | $5.00 / $0.40 |
| Azure Blob + Front Door | $0.0180 | $0.080 | $0.032 | $5.50 / $0.44 |
Model Assumptions & Known Boundary Conditions
To ensure transparency when presenting Daktan TCO outputs in architectural reviews, engineers should note three boundary conditions modeled by the engine:
- Decimal (`GB`) vs. Binary (`GiB`) Normalization: The calculator models 1 TB as 1,000 GB (`10¹² bytes`) for uniform cross-provider comparison. On invoices from binary-metered providers (`AWS S3`, `GCP`, `Azure`), 1,000 decimal GB corresponds to `931.32 GiB`.
- Wasabi 1:1 Egress Fair-Use Threshold: In the Provider TCO Matrix, if configured monthly egress exceeds 100% of active stored volume, the model automatically applies an overage bandwidth coefficient to reflect Wasabi's 1:1 egress ratio policy.
- Pre-Discount List Pricing: All outputs reflect public On-Demand / Pay-As-You-Go list rates prior to custom Enterprise Discount Programs (AWS EDP) or 12-month CDN volume commits.
Lab Verification & Empirical Benchmark Environment
Throughput logs, time-to-first-byte (`TTFB`) distributions, and invoice reconciliations cited across our engineering guides are measured directly on dedicated test nodes rather than extrapolated from vendor marketing sheets:
Model Changelog & Rate Card Audits
Q4 2026 Rate Card Audit & URL State Permalinks
Audited AWS S3, Cloudflare R2, and Backblaze B2 pricing tiers; added URL query-state serialization and workload preset profiles for AI dataset checkpoints and HLS streaming.
Origin Shield & Lifecycle Retrieval Integration
Added Origin Shield miss-collapsing coefficients and per-GB retrieval fee modeling for Standard-IA and Instant Archive classes.
Initial Public Release
Launched deterministic object storage and CDN bandwidth cost calculator across North America, Europe, APAC, and LATAM routing zones.
Editorial Governance, Independence & Maintainer Attribution
Daktan is an independent technical publication maintained by cloud systems architects and FinOps practitioners. We do not accept paid rankings, vendor sponsorships, or affiliate kickbacks to alter the ordering of providers in our TCO calculator matrix—all rankings are sorted strictly by deterministic mathematical cost (`monthlyTotal` ascending).
All CLI configurations (`rclone`, `s5cmd`, `ffmpeg`, `aws-cli`), Terraform HCL modules, and edge worker scripts published across our 18 engineering guides are tested against live S3-compatible endpoints prior to publication.