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Migration Blueprints

Migration Guides

Strategic technical migration blueprints. From legacy to modern, cloud to edge — proven patterns from real engineering engagements.

Showing 66 of 66 migration guides

Ruby on Rails Monolith → Go + Kubernetes Microservices Strangler Expert

Monolith to Microservices Transformation

A step-by-step guide to migrating a 500K-line monolith to 50 microservices using strangler pattern, achieving 5x developer velocity.

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Java EE Monolith (WebLogic, Oracle) → Spring Boot + Kubernetes on AWS Incremental Expert

Legacy Enterprise Systems to Cloud-Native Services

A comprehensive guide to migrating a 20-year-old Java monolith to cloud-native microservices on AWS, reducing costs by 60%.

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Node.js/Express Monolith → Go + Kubernetes Microservices Incremental Medium

Scaling Startup Architectures with Microservices

A practical guide to migrating a startup monolith to microservices as you scale from 100K to 10M users without downtime.

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React Monolith (Single-SPA, Webpack) → Module Federation Microfrontends Strangler Hard

Monolithic Frontend to Microfrontend Architecture

A step-by-step guide to decomposing a 200K-line monolithic React app into 15 independent microfrontends with Module Federation.

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Angular 12 Monolith (NgRx) → Angular + React Module Federation Incremental Hard

Angular Monolith to Federated Frontends

A comprehensive guide to migrating a 150K-line Angular monolith to Module Federation microfrontends with mixed framework support.

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React Create-React-App Monolith → Vite + Module Federation Microfrontends Incremental Medium

React Monolith to Independent Microfrontends

A practical guide to migrating a 100K-line React app to Vite + Module Federation microfrontends with independent deployments.

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Traditional Backtesting (70/30 split) → Walk-Forward Validation Pipeline Incremental Medium

Backtesting-Only Workflows to Walk-Forward Validation

A comprehensive guide to migrating from traditional backtesting to robust walk-forward validation for quantitative strategies.

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Static Backtest-Optimize-Repeat → Adaptive Walk-Forward + Online Learning Incremental Hard

Static Model Validation to Adaptive Testing Frameworks

A guide to migrating from static backtest-optimize-repeat workflows to adaptive testing with walk-forward analysis and online learning.

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Excel + Manual Python Scripts → Automated Python + WFV + Production Incremental Medium

Legacy Quant Research to Robust Validation Pipelines

A guide to migrating Excel-based quant research to automated Python pipelines with walk-forward validation and production deployment.

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Manual Discretionary Trading → PineScript Automated Strategies Incremental Easy

Manual Trading Rules to PineScript Automation

A guide to converting discretionary trading rules into systematic PineScript strategies with backtesting and optimization.

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Excel Formulas + Manual Charts → PineScript + TradingView Big Bang Easy

Excel-Based Strategies to TradingView

A guide to migrating Excel-based trading strategies to PineScript on TradingView with real-time alerts and backtesting.

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TradingView Custom Indicators → Fully Automated Strategies (Entry + Exit + Sizing) Incremental Medium

Custom Indicators to Fully Automated Strategies

A guide to converting custom TradingView indicators into automated strategies with entry/exit logic and position sizing.

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PHP Monolith (LAMP Stack) → MERN (MongoDB, Express, React, Node.js) Strangler Medium

PHP to MERN Modernization

A comprehensive guide to migrating legacy PHP monoliths to modern MERN stack with React, Node.js, and MongoDB.

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AngularJS + PHP Backend → MERN (React, Node.js, MongoDB) Incremental Medium

AngularJS to MERN Migration

A step-by-step guide to migrating AngularJS applications to modern MERN stack with React, Node.js, and MongoDB.

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Monolithic Rails/PHP App → MERN Microservices Strangler Hard

Monolithic Web App to MERN Architecture

A guide to decomposing monolithic web applications into scalable MERN architecture with microservices.

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AngularJS + PHP Backend → MEAN (Angular 17+, Node.js, Express, MongoDB) Incremental Medium

AngularJS to Modern MEAN Stack

A guide to migrating AngularJS applications to modern MEAN stack with Angular 17+, Node.js, Express, and MongoDB.

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Java EE Portal (JSP, Servlets, Oracle) → MEAN (Angular, Node.js, Express, MongoDB) Incremental Hard

Legacy Enterprise Portals to MEAN

A comprehensive guide to migrating legacy Java enterprise portals to modern MEAN stack with Angular and Node.js.

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Java EE (EJB, JSP, Oracle) → MEAN (Angular, Node.js, Express, MongoDB) Strangler Expert

Java Enterprise Applications to MEAN Stack

A step-by-step guide to migrating Java EE applications to modern MEAN stack with Angular & Node.js.

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Electron + Node.js → Tauri + Rust Incremental Medium

Electron to Tauri Migration Framework

A comprehensive guide to migrating Electron desktop apps to Tauri, reducing binary size by 90% and memory usage by 85%.

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Wails (Go + WebView) → Tauri (Rust + System WebView) Rewrite Medium

Wails to Tauri Modernization

A guide to migrating Wails desktop applications to Tauri for better performance, smaller binaries, and larger ecosystem.

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Native C++/Win32 Application → Tauri + React/Rust Rewrite Expert

Native Desktop App to Tauri Platform

A guide to migrating native C++/C# desktop applications to cross-platform Tauri with web technologies.

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PHP Monolith (Laravel/Symfony) → Python + FastAPI Strangler Medium

PHP to Python Backend Migration

A comprehensive guide to migrating legacy PHP backends to modern Python with FastAPI, async patterns, and type safety.

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Bash/Perl/VBA Scripts → Python Automation Rewrite Easy

Legacy Scripting to Python Automation

A guide to migrating Bash, Perl, and VBA scripts to modern Python automation with better maintainability.

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Python Monolith (Django/Flask) → Python Microservices (FastAPI) Strangler Hard

Monolithic Applications to Python Services

A guide to decomposing monolithic applications into modular Python services for better scalability and maintainability.

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Rule-Based Chatbot (Decision Tree) → RAG-Powered Assistant (LLM + Vector DB) Incremental Medium

Chatbots to RAG-Powered Assistants

A comprehensive guide to migrating rule-based chatbots to intelligent RAG-powered assistants with LLM integration.

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Vector Similarity Search (FAISS) → Production RAG (LLM + Vector DB) Incremental Medium

Basic Vector Search to Production RAG

A guide to migrating simple vector similarity search to full production RAG systems with LLM reasoning.

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Manual FAQ + Search (Internal Wiki) → RAG-Powered Knowledge Assistant Big Bang Medium

Manual Knowledge Bases to RAG Systems

A guide to migrating manual FAQ and knowledge base systems to automated RAG-powered answers.

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Native iOS (Swift) + Android (Kotlin) → React Native / Flutter Strangler Medium

Native to Cross-Platform App Development

A guide to migrating native iOS and Android apps to cross-platform frameworks (React Native, Flutter, Tauri).

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Cordova / Ionic / Xamarin → React Native / Flutter Complete Rewrite Medium

Legacy Mobile App Modernization

A guide to modernizing legacy mobile apps (Cordova, Ionic, Xamarin) to modern cross-platform frameworks.

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React Web App (PWA-ready) → React Native + Web (Code Reuse) Incremental Easy

Web App to Mobile Platform Expansion

A guide to extending existing web applications to mobile platforms using hybrid or cross-platform approaches.

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Jupyter Notebooks + Local Scripts → MLOps Pipeline (MLflow, Kubeflow, Docker) Incremental Hard

Notebook-Based Models to Production MLOps

A comprehensive guide to migrating Jupyter notebook ML models to production MLOps pipelines with versioning, testing, and monitoring.

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SQL Rules + BI Dashboards → ML Platform (Feature Store + Models) Incremental Hard

Traditional Analytics to ML Platforms

A guide to migrating from rules-based analytics to ML-powered platforms with model training and deployment.

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Manual Model Deployment (Copy Files) → Automated MLOps (CI/CD + Model Registry) Incremental Medium

Manual Model Deployment to Automated MLOps

A guide to migrating manual model deployment to automated CI/CD pipelines for ML models.

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PostgreSQL (OLTP + OLAP) → DuckDB (Analytics Only) Incremental Easy

Postgres to DuckDB Analytics Migration

A guide to migrating analytical workloads from PostgreSQL to DuckDB for 100x faster queries and 10x lower costs.

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SQLite (Embedded Analytics) → DuckDB (Analytics-Optimized) Big Bang Easy

SQLite to DuckDB Performance Upgrade

A guide to migrating analytical workloads from SQLite to DuckDB for 50x faster queries and multi-terabyte support.

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Snowflake / BigQuery → DuckDB + S3 Big Bang Medium

Cloud Warehouse to DuckDB Cost Optimization

A guide to migrating analytical workloads from cloud warehouses (Snowflake, BigQuery) to DuckDB for 90% cost reduction.

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Batch Risk Engine (Oracle, SAS, Excel) → Real-Time Distributed Risk Platform (Rust, Kafka, Redis) Strangler Expert

Legacy Risk Platform Modernization

A guide to modernizing legacy risk analytics platforms to real-time distributed systems with microservices architecture.

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Single-Asset Trading Platform (Equities) → Multi-Asset Platform (Equities, FX, Futures, Options) Incremental Hard

Single-Asset to Multi-Asset Trading Systems

A guide to expanding single-asset trading systems to support multi-asset classes with unified risk and execution.

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Monolithic Quant Platform (Python/C++ Mixed) → Distributed Microservices (Rust, Kafka, Kubernetes) Strangler Expert

Monolithic Quant Platform to Distributed Architecture

A guide to decomposing monolithic quant platforms into scalable distributed systems with microservices.

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Flask (Sync, Gunicorn) → FastAPI (Async, Uvicorn) Incremental Easy

Flask to FastAPI Performance Migration

A guide to migrating synchronous Flask APIs to high-performance async FastAPI with 10x throughput.

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Django REST Framework (Sync) → FastAPI (Async) Incremental Medium

Django to FastAPI API Modernization

A guide to migrating Django REST Framework APIs to high-performance FastAPI with async support.

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Monolithic Python App (Flask/Django) → FastAPI Microservices Strangler Hard

Monolithic Python App to FastAPI Services

A guide to decomposing monolithic Python applications into FastAPI microservices for better scalability.

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Discretionary Trading (Manual Decisions) → Systematic Trading (Rules-Based) Incremental Medium

Discretionary to Systematic Trading Transition

A guide to transitioning from discretionary trading decisions to systematic, rules-based strategies with backtesting and automation.

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Manual Order Entry (Bloomberg Terminal) → Algorithmic Execution (Python API) Incremental Medium

Manual Execution to Algorithmic Trading

A guide to migrating from manual trade execution to automated algorithmic trading systems.

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Legacy C++ Execution Engine (10+ years old) → Modern Low-Latency Platform (Rust, gRPC) Strangler Expert

Legacy Execution Platform Modernization

A guide to modernizing legacy order execution platforms to low-latency, API-first systems.

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Excel Spreadsheets (Manual Analysis) → Python + Jupyter Lab Incremental Easy

Excel-Based Analysis to Python Research

A guide to migrating financial research from Excel spreadsheets to Python with reproducible workflows and version control.

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Manual Analysis (Charts, News, Reports) → Systematic Workflows (Python, Scheduler) Incremental Easy

Manual Market Analysis to Systematic Workflows

A guide to converting manual market analysis processes into automated, systematic workflows.

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Academic Research (MATLAB, R, Notebooks) → Production Quant Research (Python, SQL, Git) Incremental Medium

Academic Finance Projects to Production Research

A guide to transitioning academic quant research projects into production-ready systems with rigorous validation.

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Python Trading System (asyncio, NumPy) → Low-Latency C++/Rust (FPGA-ready) Incremental Expert

Python Trading Systems to Low-Latency Architecture

A guide to migrating Python-based trading systems to low-latency C++/Rust architectures for microsecond execution.

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Legacy Python Backtester (Pandas) → Vectorized Backtester (Polars, Arrow) Rewrite Medium

Backtesting Framework Modernization

A guide to modernizing legacy backtesting frameworks for speed, accuracy, and scalability.

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Manual Trade Management (Excel, Email) → Systematic Execution Engine (Python, APIs) Incremental Medium

Manual Trading Workflows to Systematic Execution

A guide to converting manual trading workflows into systematic execution systems with automation.

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Jupyter Notebooks (Research) → Production Python Pipelines Incremental Medium

Research Notebooks to Production Alpha Pipelines

A guide to converting research Jupyter notebooks into production-grade alpha pipelines.

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Linear Factor Models (OLS, Value/Momentum) → ML Strategies (XGBoost, Neural Networks) Incremental Hard

Traditional Factor Models to ML Strategies

A guide to migrating from traditional factor models (linear) to machine learning strategies for alpha generation.

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Manual Research (Excel, Email, Manual Backtests) → Automated Research Platform (Jupyter, Airflow, MLflow) Incremental Medium

Manual Research Processes to Automated Platforms

A guide to converting manual quant research processes into automated platforms for faster alpha discovery.

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Python (NumPy, Pandas, Numba) → Rust + PyO3 Incremental Medium

Python to Rust for Performance-Critical Applications

A guide to migrating performance-critical Python components to Rust for 100x speed improvements and memory safety.

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Legacy C++ Codebase (20+ years old) → Rust with CXX FFI Incremental Expert

C++ to Rust Modernization Framework

A guide to migrating legacy C++ codebases to memory-safe Rust with minimal disruption.

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Node.js/Express Backend → Rust (Axum/Tokio) Incremental Medium

Node.js to Rust Backend Migration

A guide to migrating high-performance Node.js backends to Rust for 10x throughput and lower latency.

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Rule-Based Chatbot (Decision Tree) → Enterprise LLM Platform (RAG + Fine-Tuned Models) Big Bang Hard

Chatbot to Enterprise LLM Platform Migration

A guide to migrating simple rule-based chatbots to enterprise-grade LLM platforms with RAG and custom models.

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OpenAI GPT-4 (100% of traffic) → Hybrid: GPT-4 + Llama (on-prem) Incremental Medium

OpenAI to Hybrid LLM Stack Migration

A guide to migrating from pure OpenAI APIs to hybrid LLM stacks with on-prem models for cost and privacy.

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Rule-Based Automation (If-Then) → LLM-Driven Automation (Natural Language) Incremental Medium

Rule-Based AI to LLM-Driven Automation

A guide to migrating rule-based automation systems to LLM-powered workflows with natural language understanding.

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Elasticsearch (Keyword/TF-IDF) → FAISS + Sentence Transformers Incremental Medium

Elasticsearch to FAISS Vector Search Migration

A guide to migrating keyword-based Elasticsearch to FAISS vector search for semantic similarity at 100x lower latency.

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Pinecone (Managed Vector DB) → FAISS (Self-Hosted) Big Bang Easy

Pinecone to FAISS Cost Optimization Migration

A guide to migrating from managed Pinecone to self-hosted FAISS for 80% cost reduction.

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Traditional Search (Lucene, Solr) → Vector Search (FAISS + Embeddings) Incremental Hard

Traditional Search to Vector Search Architecture

A guide to migrating traditional keyword search to modern vector search with FAISS for semantic understanding.

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Legacy C++ Trading Platform → Modern Rust/Kafka Event-Driven Platform Strangler Expert

Legacy Trading Platform Modernization

A guide to modernizing legacy trading platforms to low-latency, event-driven architectures.

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Excel/VBA Risk Models → Python Risk Engine (NumPy, Pandas) Rewrite Medium

Spreadsheet-Based Risk Models to Production Systems

A guide to migrating Excel-based risk models to production-grade Python systems.

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Monolithic Trading Platform (C++) → Microservices (Rust, Kafka, Kubernetes) Strangler Expert

Monolithic Trading Platform to Microservices

A guide to decomposing monolithic trading platforms into microservices for better scalability.

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