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Migrations

Zero-Downtime System & Stack Migration Playbooks

De-risk your most critical infrastructure transitions with verified step-by-step blueprints, failure-mode analysis, and rollback strategies.

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Migration Index

25 Enterprise Modernization Guides

25 Playbooks
Legacy Monolith→Modular Microservices

Monolith to Microservices Migration: Strangler Fig Playbook

Decompose brittle monolithic architectures into autonomous, event-driven microservices without high-risk big-bang rewrites.

0 min production downtime during cutoverRead Playbook →
Next.js Pages Router→Next.js 15 App Router

Next.js Pages to App Router Migration Architecture

Modernize legacy Next.js applications to App Router and React Server Components, slashing client-side JavaScript bundles by 60%+.

−68% client javascript bundle sizeRead Playbook →
Heroku PaaS→AWS / Google Cloud (GCP)

Heroku to AWS / GCP Cloud Migration & Cost Optimization

Escape restrictive dyno limits, high add-on markups, and networking constraints by migrating to modern AWS or Google Cloud architectures.

−58% average monthly cloud infrastructure costRead Playbook →
On-Premises Data Center→AWS Cloud Landing Zone

Enterprise On-Premises to AWS Cloud Migration

Transition mission-critical data center workloads to secure, multi-account AWS Landing Zones with zero business disruption.

−40% total cost of ownership (tco)Read Playbook →
MySQL / MariaDB→PostgreSQL 16+

MySQL to PostgreSQL Migration & Schema Translation

Migrate mission-critical MySQL databases to modern PostgreSQL, unlocking powerful JSONB indexing, advanced window functions, and pgvector.

0 data loss during live streaming cutoverRead Playbook →
Legacy REST APIs→GraphQL / gRPC

Migrating REST to GraphQL & gRPC API Architectures

Eliminate over-fetching and network serialization bottlenecks by replacing REST with GraphQL for UI clients and gRPC for microservices.

−75% network payload size over mobileRead Playbook →
AngularJS / Angular→React & Next.js 15

Angular to React & Next.js Incremental Migration

Incrementally modernize legacy Angular applications into high-performance React and Next.js 15 without halting active feature development.

−60% initial page bundle load timeRead Playbook →
Vue.js→React & Next.js 15

Vue to React & Next.js Migration Strategy

Consolidate your frontend engineering stack on React and Next.js 15 to leverage React Server Components and modern design systems.

95+ mobile google lighthouse performance scoreRead Playbook →
Django (Sync)→FastAPI (Async)

Django to FastAPI Asynchronous API Modernization

Upgrade blocking Django backends to asynchronous FastAPI services, cutting API latencies and scaling ML/AI streaming endpoints.

8x concurrent request throughput improvementRead Playbook →
Create React App (CRA)→Vite / Next.js 15

Migrating Create React App (CRA) to Vite & Next.js

Rescue deprecated Create React App codebases, slashing build times from minutes to seconds with Vite or Next.js 15.

< 300ms hot module replacement (hmr) latencyRead Playbook →
Bare EC2 / Virtual Machines→Amazon EKS / Kubernetes

Bare EC2 to Amazon EKS Kubernetes Migration

Containerize static EC2 server fleets and migrate to auto-scaling Amazon EKS clusters, slashing idle compute waste by 50%+.

−52% monthly cloud compute spend via karpenter & spotRead Playbook →
Datadog (Proprietary)→Prometheus & Grafana (Open Source)

Datadog to Prometheus & Grafana Migration

Replace runaway Datadog bills with open-standard OpenTelemetry, Prometheus, and Grafana without sacrificing monitoring fidelity.

−72% observability infrastructure cost reductionRead Playbook →
Monolithic WordPress→Headless WordPress & Next.js 15

WordPress to Headless Next.js 15 Decoupled Architecture

Empower content editors with the familiar WordPress editor while delivering sub-second, un-hackable Next.js 15 web experiences.

98+ google pagespeed performance scoreRead Playbook →
Elasticsearch (Elastic NV)→AWS OpenSearch / ClickHouse

Elasticsearch to OpenSearch & ClickHouse Migration

Escape Elastic NV licensing restrictions and high hosting markups by splitting search into OpenSearch and high-scale logs into ClickHouse.

−65% storage and compute infrastructure costRead Playbook →
Legacy JavaScript (ES6+)→Strict TypeScript 5+

JavaScript to Strict TypeScript Codebase Migration

Transform error-prone JavaScript applications into strictly-typed TypeScript codebases that catch defects before reaching production.

−40% reduction in production runtime defect ticketsRead Playbook →
Client-Side SPA (Vite/CRA)→Server-Driven UI & RSC

Migrating Client SPAs to Server-Driven UI (RSC)

Transform heavy client-side SPAs into ultra-responsive Server-Driven UI architectures that render instantly on low-powered mobile devices.

< 50ms time to first byte (ttfb) on edge cdnRead Playbook →
Self-Hosted PostgreSQL (EC2)→AWS Aurora PostgreSQL Serverless v2

Self-Hosted PostgreSQL to AWS Aurora Serverless v2

Eliminate manual database maintenance, replica lag, and storage management by migrating to fully managed AWS Aurora Serverless v2.

< 30s automated multi-az disaster recovery failoverRead Playbook →
Legacy Redux / Redux Thunk→Zustand & TanStack Query

Redux to Zustand & TanStack Query Modernization

Clean up thousands of lines of Redux actions, reducers, and thunks by separating server state (TanStack Query) from client UI state (Zustand).

−78% lines of state management boilerplate codeRead Playbook →
Legacy Custom Webpack→Turbopack / Vite

Webpack to Turbopack & Vite Bundler Migration

Replace fragile, 500-line Webpack configurations with modern Rust-powered build tools that start instantaneously and eliminate developer lag.

10x faster dev server startup and hot reloadingRead Playbook →
Firebase Firestore→Supabase & PostgreSQL

Firebase Firestore to Supabase PostgreSQL Migration

Break free from Firebase NoSQL document limitations and unpredictable read bills by migrating to relational PostgreSQL on Supabase.

−60% monthly cloud database and auth hosting costsRead Playbook →
Segment (Twilio)→RudderStack / Self-Hosted CDP

Segment to RudderStack Customer Data Platform Migration

Take ownership of your customer event streams, comply with GDPR/HIPAA, and slash monthly CDP bills by migrating to RudderStack.

−80% customer data platform software licensing costsRead Playbook →
Auth0 (Okta)→Clerk / Custom Auth

Auth0 to Clerk & Modern Identity Migration

Replace expensive Auth0 per-MAU contracts with modern developer-first authentication with pre-built React components and seamless multi-tenancy.

−70% monthly identity and authentication costsRead Playbook →
Travis CI / CircleCI→GitHub Actions

CircleCI & Travis to GitHub Actions Migration

Consolidate your continuous integration pipelines into GitHub Actions, eliminating third-party CI vendor fees and developer context switching.

−50% ci/cd licensing and compute expenditureRead Playbook →
Stripe Legacy Charges→Stripe Billing v2 & Usage Metering

Stripe Legacy to Modern Stripe Billing v2 Architecture

Modernize your SaaS revenue engine with Stripe Billing v2, unlocking usage-based pricing, automatic tax calculation, and self-serve customer portals.

+14% recovered revenue via stripe smart retriesRead Playbook →
AWS Lambda / Serverless Framework→Google Cloud Run / AWS ECS Fargate

Serverless Lambda to Containerized Cloud Run Architecture

Break free from Lambda timeout limits, cold-start latency, and proprietary frameworks by containerizing services on Google Cloud Run.

< 10ms average api response latency without cold startsRead Playbook →

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