Power AI to refactor and rewrite.

vFunction gives AI coding tools the context they need to modernize complex, real-world applications with speed and precision.

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Why AI Coding Tools Need vFunction

AI coding tools are great at generating code, but they struggle to modernize existing real-world systems from code alone.

Static analysis shows too many dependencies, prompts are fragile and inconsistent, and LLMs lack the bounded architectural context organizations need to modernize effectively.

vFunction solves this with runtime architectural context and proprietary data science, giving AI the specs and guardrails it needs to work on even the largest enterprise systems.

The platform for AI-driven modernization

Purpose-built to conquer application complexity, vFunction’s runtime insights and proprietary analysis power AI in transforming monoliths into modular, cloud-ready services.

Full Stack Windows Modernization

Modernize .NET Framework applications and convert SQL Server databases to PostgreSQL.

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Modernize Large VM Apps to Containers

Move complex Java and .NET applications from VMs to containers faster.

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Power AI-Driven Development for Existing Applications

Provide context, architecture, and deterministic refactoring skills for AI coding assistants.

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Generate Software Specs for Complex Apps

Let vFunction generate structured specs for complex applications enabling AI to rewrite your legacy code.

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Maximize your cloud investments

vFunction partners with AWS, Microsoft Azure, and other leading hyperscalers to modernize applications for advanced cloud services.

AWS

vFunction partners with AWS across a range of programs to accelerate and de-risk modernization initiatives—enabling qualified customers to access fully funded licenses and expert support.

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Microsoft Azure

vFunction collaborates with Microsoft Azure to help growing companies and global brands modernize complex, business-critical applications. Available on Azure Marketplace, vFunction aligns legacy transformation with your cloud strategy.

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case study

From lift-and-shift to cloud-native performance

See how CDL, a leading UK insurtech powering 60% of the nation’s insurance quotation traffic, used vFunction and Amazon Q Developer to turn architectural complexity into actionable modernization steps to realize the full value of the cloud.

Modernization beyond monoliths

Technical debt and complexity aren’t unique to monoliths. Distributed environments introduce architectural challenges that require modernization. vFunction uses OpenTelemetry to deliver deep architectural insights that remove complexity, enable migrations, and keep your systems scalable and resilient over time. 

Once monoliths are broken into modular services, vFunction provides ongoing oversight across distributed applications, monitoring drift and preventing sprawl.

Stay ahead.

Get Modernization Reimagined—your source for expert insights on modernization, GenAI, and architecture.

adam safran turo

“Last year we completed the extraction of our conversation service from the monolith. We picked a popular service that was notoriously slow. Through considerable effort, we turned this into our lean, mean microservice machine that boasts sync times that are 25-100x better. In addition, we improved cycle time to just five minutes."

Adam Safran

Senior Engineering Manager, Turo

“Gemini is a massive application—over 8 million lines of code and 14,000 classes. It’s incredibly complex. The vFunction dashboard gave us insights we couldn’t get from traditional tools. Now we’re breaking it into 27 manageable blocks instead of one huge monolith."

Steve Butler

Technical Project Manager

“A Fortune 500 financial leader used vFunction to modernize legacy Java applications 15x faster than manual methods—transforming monoliths into microservices."

“We are excited to be working with vFunction to monitor our applications to detect and fix issues before they result in more serious consequences."

Martin Lavigne

R&D Lead, Trend Micro

“vFunction addressed a critical need for us to take thousands of our enterprise applications and modernize them through the use of an extremely powerful automated platform."

Flavio Fasano

Senior Solution Architect, Intesa Sanpaolo Bank

Best use of AI in Software Development

vFunction's architectural modernization platform was named a 2025 CODiE Award Winner for Best Use of AI in Software Development.

AI-Augmented Development

vFunction named a Gartner Cool Vendor in AI-Augmented Development and Testing for Software Engineering.

gartner cool vendor

Resources

Guide
2025 Architecture in Software Development. Rethinking the Role of Architecture in the Age of AI.
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Blog
The rise of vibe coding: Why architecture still matters in the age of AI agents
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Blog
AMA: Ask your Monolith Anything. Introducing the query engine for monoliths.
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Get started with vFunction

Modernize and transform the architecture of Java and .NET apps at least 15X faster and get more out of your cloud workloads.