An AI-accelerated modernization of a high-traffic e-commerce platform, enabling zero-downtime migration to Azure microservices.
About the client
A fast-growing e-commerce company based in New York, known for live shopping events, real-time recommendations, and one-click checkouts. In just six years, they scaled to over 1 million users across the US and Canada, processing close to $800M in annual transactions — with 40% year-over-year growth.
About
the Client:
A fast-growing e-commerce company based in New York, known for live shopping events, real-time recommendations, and one-click checkouts. In just six years, they scaled to over 1 million users across the US and Canada, processing close to $800M in annual transactions — with 40% year-over-year growth.
Mark L., Chief Product Officer, carried direct responsibility for revenue and conversion. His focus was to keep the shopping experience seamless while enabling new features to meet rising demand. But the cracks in the technology became impossible to ignore. The 500,000-line .NET monolith slowed delivery, and every flash sale carried the risk of latency or downtime. For Mark, that meant lost transactions, reduced conversion rates, and a growing threat to customer trust.
Mark first learned about Devox Software through peers in his network who had faced similar modernization challenges in fintech and retail, and their recommendation led him to start the conversation.
Background:
The client’s core platform had grown quickly — but unevenly.
Originally built on a 500,000-line .NET monolith, it combined C# backend logic, SQL databases, and a patchwork of third-party APIs. Over five years and multiple handovers, architecture drifted. Complexity crept in. Change got slower. Risk got higher.
As user numbers grew 30-40% annually, the system struggled to keep up. Flash sales triggered slowdowns. Release windows narrowed. Any update carried the threat of downtime.
In 2025, the leadership team committed to a shift: move to a cloud-native setup on Azure, introduce microservices, and adopt serverless components to support future growth. The budget was capped at $1.2M — a significant investment for a mid-sized team. Nearly half was earmarked for keeping the business online throughout.
As one exec put it: “We weren’t afraid of the rebuild. We were afraid of the interruptions it might cause.”
Project
Team Composition:
Challenges:
This was a customer-facing platform under pressure — fast growth, real revenue, zero room for delays.
Every deployment touched critical flows: checkout, inventory, and payment. Even minor updates required caution. A slip could ripple across systems and erode trust in seconds.
Three conditions shaped the challenge:
Unaddressed, these constraints capped the company’s ability to scale, introduce features, and meet rising demand.
Tech
Stack:
NET Framework, .NET 8, C#, SQL Server, Azure Functions, Azure App Services, Cosmos DB, REST/gRPC APIs, Terraform, GitHub Actions, SonarQube, AI coding agents, E2E testing pipelines.
Solution:
The team applied a structured, AI-accelerated modernization flow — one slice at a time, without disrupting users.
Each step delivered production-grade increments. No rollbacks. No freezes. Just forward movement, one tested slice at a time.
Results:
Sum Up:
This modernization proved one principle: continuity matters as much as change. The platform scaled under pressure, released faster, and aligned compliance with every cycle. Revenue stayed live and teams delivered without pause. For Mark and his colleagues, the real difference was that peak sales no longer felt like a risk, and the focus shifted back to building new products. Impressed by the results, the company invited Devox to explore further collaboration on scaling data-driven personalization and future cloud initiatives.
For companies that run customer-facing systems, this approach turns modernization from a risk into an advantage. Devox Software applies the same zero-downtime model across finance, retail, and SaaS. Explore how our AI-accelerated modernization can secure growth without disruption — start with a confidential technical audit.
Tell us where your system needs help — we’ll show you how to move forward with clarity and speed. From architecture to launch — we’re your engineering partner.
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