99.9% uptime, 40% faster transactions, 25% cost reduction
FinTech / E-commerce
8 weeks
Cloud Migration, .NET Development, DevOps Engineering
On-premise .NET apps with low fault tolerance, sync issues, high maintenance costs
99.9% uptime, 40% faster transactions, 25% IT cost reduction
A mid-sized FinTech enterprise had built its core business on a suite of ASP.NET applications — a payment processing gateway, an internal CRM, an inventory management system for their e-commerce operations, and a customer-facing portal. These systems had served them well during their early growth phase, but as user traffic increased and the business expanded, the cracks in their on-premise infrastructure became impossible to ignore.
The entire application stack ran on two physical servers in a co-located data center. There was no redundancy — if either server failed, core business processes halted completely. In the previous year alone, the company experienced: • 3 unplanned outages totaling 14 hours of downtime. • Each outage cost approximately $8,000–$12,000 in lost transactions and emergency contractor fees. • The most recent incident occurred during a Friday evening traffic spike, and recovery took 6 hours because the on-call engineer needed physical access to the data center.
The CRM, inventory system, and customer portal operated as isolated silos. Data synchronization happened via scheduled batch jobs every 30 minutes. This meant: • A customer could purchase an item on the portal that was already sold out in the warehouse system. • Financial reports were always 30–60 minutes behind actual transactions. • Support staff frequently gave customers incorrect order status information, leading to complaints and chargebacks.
Running on-premise infrastructure consumed a disproportionate share of the IT budget: • $4,500/month in data center hosting fees. • 1.5 FTE dedicated to server maintenance, OS updates, security patches, and backup management. • Hardware refresh every 3 years — the next cycle was estimated at $35,000.
With logs scattered across multiple servers and no centralized monitoring, diagnosing issues was like searching for a needle in a haystack. The average time to identify the root cause of an incident was 2+ hours.
The client chose Optimum Web's DotNet Azure Integration service package to migrate their entire infrastructure to Microsoft Azure.
The core architectural change: replacing synchronous, tightly-coupled communication between applications with an asynchronous message-based architecture.
For FinTech companies running on-premise .NET infrastructure, the question isn't whether to migrate to the cloud — it's how quickly you can do it without disrupting operations. The combination of Azure Service Bus for reliable async communication, App Services for managed hosting, and Azure DevOps for CI/CD automation creates a foundation that scales with your business while reducing operational costs from day one.
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Every project is unique, but the problems often aren't. If this case study resonated with your situation, let's discuss how we can help.
