2025 Engineering Predictions for Financial Services

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This post predicts that workflow-driven microservices will become a more popular architecture in financial services in 2025. It highlights the challenges of microservices such as transactional integrity (lack of XA transactions, need for Saga pattern), difficulty in understanding and managing business processes (microservice-to-microservice calls, central choreography, event-driven architectures), mixing business processing with system error handling, challenging observability, and reliability issues. The post suggests that code-first workflow technologies like Temporal can solve many of these problems by making mission-critical services more reliable and enabling rapid development of complex systems and AI applications.