Introduction.- Part I: Novel Big Data and AI Technologies for Digital Finance.- A Reference Architecture for Big Data Systems and AI Applications in the Finance Sector.-  Hybrid Transactional and Analytical Processing for Integrated Data Management in Digital Finance and FinTech Applications.- Semantic Interoperability Modelling for Digital Finance Applications.- Semantic Streaming for Digital Finance Applications.- Part II: Blockchain Technologies and Digital Currencies for Digital Finance Applications.- Central Bank Digital Currencies and a Euro for the Future.- Efficient and Accelerated KYC Using Blockchain Technologies.- Part III: Applications of Big Data and AI in Digital Finance.- AI-based platform for Intelligent and Automated Accounting.- Addressing Intra-Day Volatility in Risk Assessments for Forex Trading.- Next-Generation Personalized Investment Recommendations.- Personalized Finance Management for Small Medium Businesses.- AML/CF supervision empowered by AI.- Analyzing Large Scale Blockchain Transaction Graphs for Fraudulent Activities.- Cybersecurity and Fraud Detection in Financial Transactions.- Part IV: Applications of Big Data and AI in Insurance.- Risk assessment for personalized health insurance products.- Alternative Data for Personalized Insurance products.- Part V: Technologies for Regulatory Compliance in the Finance Sector.- AI Governance -Trustworthy and Responsible use of AI.- Large Scale Data Anonymization for GDPR Compliance.- Conclusion.