What business problem did the anti-fraud project solve? What would happen if it was not separated into a separate service?

The anti-fraud project was tasked with detecting and preventing fraudulent activities in the system, such as transaction forgery, use of stolen data, or suspicious user activity. The main business problem was protecting financial transactions and reducing company losses.

Separating anti-fraud into a dedicated service allowed:

• Isolating the verification logic from the main application, which simplified support and development.
• Scaling the anti-fraud system independently from other services, ensuring high performance as load increases.
• Quickly implementing new algorithms and rules without risking stability of the main product.

If anti-fraud had not been separated into its own service:

• The main application would have become more complex and less resilient to errors.
• Scaling and updating the anti-fraud system would have been more difficult, potentially causing delays in transaction processing.
• The risk of failures and impact on user experience would have increased, negatively affecting the business.