--- title: "Delivery Cost Optimization" description: "Reduce spend on hosted runners, device clouds, and release tooling by moving the right parts of the stack in-house." url: https://www.callstack.com/services/delivery-cost-optimization updated: 2026-11-09T15:58:22.903Z --- # Delivery Cost Optimization Reduce spend on hosted runners, device clouds, and release tooling by moving the right parts of the stack in-house. _[Expert Engineering](/ai-native-engineering) › [Enterprise Infrastructure](/capabilities/self-hosted-ci-cd-infrastructure)_ **Delivery spend, engineered down** CI minutes, device clouds, and per-seat tools compound quietly. We audit delivery spend, model hosted versus self-hosted economics per workload, and move in-house only where the math wins. ## Enterprise Infrastructure - ISO 27001 certified - 100+ Enterprise projects delivered - React Foundation Founding Member · 300+ commits to React Native · Contributing since 2016 - Industry runs on our tooling · 50M+ OSS downloads / month - 10 min From code change to mini-app release - 60 → 10min Faster builds after replacing Jenkins with EAS ## What you get: Pay for delivery, not for markup. - **Spend audit** Every runner minute, device hour, and license mapped to actual workloads. - **Hosted vs self-hosted model** Break-even math per component, including the operational cost of owning it. - **Targeted migration** The expensive parts moved in-house; the cheap conveniences kept hosted. - **Right-sized infrastructure** Runners and device labs sized to real queues, not peak paranoia. - **Waste elimination** Idle runners, redundant jobs, and over-triggered pipelines cut. - **Ongoing cost telemetry** Cost per build and per release tracked, so savings persist. ## How we work together: Improve the system without disrupting delivery. ### Extend your team (1 week) Our senior engineers join your team to ship features, guide technical decisions, and strengthen delivery. - Your roadmap and workflow - Expertise shared as we work - Flexible timezone coverage ### Deliver a project (1-12 months) We take agreed work from technical planning to release, with clear responsibilities and progress you can see. - 3 Callstack engineers ship like 6 - Impact visible before sprint two - End-to-end delivery ### Solve specific challenge (as needed) We address a performance, migration, or infrastructure challenge, or run training around your team’s needs. - Focused reviews or implementation - Knowledge your team keeps - Outcomes guaranteed with contract ## What shipping at AI speed looks like. - [Cutting Mobile Build Times by Up to 79% for a Southeast Asian Bank](/case-studies/cutting-mobile-build-times-by-up-to-79-for-a-southeast-asian-bank): 2.4× faster iOS cache-hit builds on average - [Accelerating Teamworks' Mobile Delivery With Re.Pack and Module Federation](/case-studies/accelerating-teamworks-mobile-delivery-with-re-pack-and-module-federation): 10 min from code change to mini-app release - [Migrating a Legacy React Native App to Expo for Faster Builds and Simplified Releases](/case-studies/migrating-a-legacy-react-native-app-to-expo-for-faster-builds-and-simplified-releases): 6x faster builds after replacing Jenkins with EAS - [Building Scalable Observability for a High-Growth React Native App](/case-studies/building-scalable-observability-for-a-high-growth-react-native-app): 3→1 analytics systems unified into a single interface **Same delivery, smaller bill.** A concrete migration plan with break-even math before anything moves. [Book a call](/contact) > We had been struggling with React Native application performance until we met Callstack. > > — Huỳnh Chí Hùng, Associate Director, MOMO We’ll connect you with the right expert within 24 hours. ## Let’s find the right path for your product. **How much can we save?** It scales with volume: teams running heavy CI and device-cloud workloads typically save the most by owning that capacity. The audit produces your number, not an industry average. **What are the hidden costs of self-hosting?** Hardware refresh, maintenance time, and on-call attention. We put them in the model explicitly - and automate most of the maintenance with agents. **What should stay hosted?** Low-volume, bursty, or convenience workloads where elasticity beats ownership. The answer is per-component, not ideological. **Does the team need new skills to operate it?** Modest ones. Runbooks, monitoring, and maintenance agents keep the operational load to a fraction of an engineer. **How fast does it pay back?** Typically within months at sustained scale; the break-even point is in the plan before you approve anything. **Does cost cutting hurt delivery speed?** Usually the opposite - owned runners with proper caching are faster than shared hosted capacity. ## Open source - [React Native Community CLI](https://github.com/react-native-community/cli): Command line tools to help you build React Native apps - [Re.Pack](https://re-pack.dev/): A webpack-based toolkit to build your React Native application with full support of webpack ecosystem - [React Native Builder Bob](https://github.com/callstack/react-native-builder-bob): Simple set of CLIs to scaffold and build React Native libraries for different targets - [Rock](https://www.rockjs.dev/): Modular toolkit for teams building React Native apps - [Agent Skills](https://github.com/callstackincubator/agent-skills): Callstack’s best practices on React Native performance optimization, upgrading, CI workflows, and brownfield migrations