Microservices

An API gateway is the front door to your financial services platform. Every API request — from mobile apps, partner integrations, and internal services — passes through it. The gateway must enforce authentication, rate limiting, and security policies while maintaining the performance and availability that financial services demand. We have deployed Kong, Ambassador, and AWS API Gateway in production at financial institutions. The choice depends on your deployment model, security requirements, and team capabilities. Each has distinct trade-offs for regulated environments. ...

Update (July 2026): This guide has been refreshed with the latest OWASP API Security Top 10 (2025 edition), updated threat landscape data, and modern security patterns for Kubernetes-native and serverless API deployments. The shift toward microservices architectures has fundamentally transformed application security landscapes. While monolithic applications typically featured well-defined security perimeters, microservices create hundreds or thousands of API endpoints that must be individually secured. This architectural evolution demands a complete rethinking of security strategies, moving from perimeter-based protection to comprehensive API-centric security models. ...