Changing your AML monitoring platform can be scary. It often means disrupting critical workflows, migrating complex data models, and trusting a new system with the integrity of your fraud detection process.
But, with the right tools, it doesn't have to be.
This article shows how the migration can be simple, detailing the real-world journey of a leading Indian crypto exchange that successfully migrated its entire AML rule engine in just six weeks, on-premise.
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Breaking free from limitations
For years, the company relied on another AML platform. It worked, until it didn’t.
As the company grew, the limitations of their system became increasingly apparent. Data had to be hosted externally, which raised both operational and compliance concerns.
The platform imposed rigid data models, forcing the teams to adapt their processes to fit the tool rather than the other way around. Adding or adjusting rules required engineering support, slowing down iteration and making it difficult for the compliance team to react quickly. Investigating alerts was painful, with fragmented case information spread across multiple tools, leading to longer resolution times and reduced visibility.
The teams wanted to move faster, experiment with new scenarios, and reduce their dependence on engineering. They needed a system that could keep up with their growth, handle increasingly complex transaction patterns, and provide transparency and control — all without compromising accuracy.
That’s when they decided to migrate to Marble.
Building a platform that fits their business
Once the decision to migrate was made, the goal was clear: get Marble up and running quickly, without disrupting ongoing AML monitoring. Which they did by following these 5 steps:
- Deploying the infrastructure: The team provisioned a dedicated environment and entirely self-hosted Marble. In a few days, their on-premise instance was up and running, ensuring full control over their data, security, and deployment lifecycle.
- Defining the data model and preparing historical data: Instead of adapting to a predefined schema, the exchange modeled its entities (users, accounts, transactions etc) to match its business logic. Historical data was then ingested to validate the model and enable scenario testing from day one.
- Building scenarios and rules: With the foundation in place, the compliance team started designing AML detection rules directly in Marble’s rule builder. Each scenario could be created, tested, and refined without engineering involvement.
- Connecting the platform: The technical team then set up their tailor-made Marble APIs to connect with their system. This allowed them to get real-time decisions on their transactions, and ingest every new object into their Marble database.
- Testing and optimizing: Finally, historical data was replayed to validate rule performance, parameters were fine-tuned, and detection accuracy was confirmed before going live. Continuous monitoring and iterative improvements allowed them to reach optimal performance quickly.
Thanks to Marble’s modular architecture, deployment was straightforward: the team could spin up their own environment, connect it to their existing data sources, and start testing in just 6 weeks.
Running in parallel to validate with confidence
Before fully switching, the exchange chose to run Marble in parallel with their existing system — a “shadow mode” phase where both platforms operated simultaneously. Their legacy provider continued to handle live decisions, while Marble processed the same transactions in the background.
This approach gave the team the best of both worlds: continuity and experimentation. They could safely test scenarios, adjust thresholds, and measure detection rates without any operational risk. Every alert generated by Marble was compared against their live production outcomes, allowing them to validate that both systems produced consistent decisions.
Thanks to Marble’s advanced analytics, the team gained a detailed view of performance across multiple dimensions: hit rates, false positives, latency, rule coverage… This visibility helped them quickly identify where Marble’s flexibility provided a stronger match to their business logic and risk appetite.
The parallel run also became a learning phase. The compliance team used the opportunity to refine their rules and optimize thresholds before going live, confident that each adjustment could be measured and explained.
Within a few weeks, the exchange had full confidence that Marble was ready to take over production — delivering the same reliability, with far greater control.
Immediate impact and lasting benefits
The migration quickly translated into tangible benefits for the exchange, improving both day-to-day operations and strategic oversight.
Key outcomes:
- Full control over data and operations: The self-hosted setup gave the team complete oversight of their environment and data.
- Faster iteration on rules: Compliance teams can now create, test, and adjust detection rules independently, without relying on engineering.
- Tailored monitoring: The platform adapted to the exchange’s own data model and scenarios, improving relevance and accuracy.
- Simplified investigations: With Marble’s Case Manager, reviewing alerts and following up on suspicious activity became more efficient and structured, allowing the team to act faster and with greater confidence.
By centralizing rules, alerts, and case management in a single platform, the team not only gained operational efficiency but also greater clarity and control over their AML processes — turning what was once a complex, fragmented system into a streamlined, reliable monitoring framework.
Conclusion
Changing an AML monitoring platform can feel daunting, but the experience of this leading crypto exchange demonstrates that it doesn’t have to be. With Marble, the migration was fast, controlled, and supported every step of the way by a dedicated implementation team. The exchange retained full control over their data, built rules aligned with their business logic, and gained immediate operational benefits.
By combining flexibility, transparency, intuitive tools, and hands-on support, Marble makes it possible for teams to switch platforms confidently — turning what might seem like a scary undertaking into a smooth, manageable process that empowers compliance and product teams from day one.
To learn more about this client's journey, read the full case study here.
