Open Banking

An EU legislative framework (PSD2, Directive 2015/2366) governing payment services and payment service providers across the European Economic Area. PSD2 introduced requirements for strong customer authentication, mandated open access to payment account data for authorised third parties (enabling open banking), and created new categories of regulated payment institutions.

A legal framework that governs the use, modification, and distribution of open source software, defining the rights and obligations of users and contributors. Key licence types include permissive licences (MIT, Apache 2.0, BSD) that allow broad commercial use with minimal restrictions, and copyleft licences (GPL, AGPL) that require derivative works to be released under the same terms.

The EU directive (2015/2366) that regulates payment services and payment service providers, mandating strong customer authentication, open banking through account access APIs (XS2A), and enhanced consumer protection. PSD2 has fundamentally reshaped the European payments landscape by requiring banks to provide licensed third parties with access to customer account data and payment initiation capabilities.

The integration of financial services — such as payments, lending, insurance, or investment — directly into non-financial platforms and customer journeys. Embedded finance enables companies like e-commerce platforms, SaaS providers, and gig economy marketplaces to offer financial products without becoming licensed financial institutions, typically through Banking-as-a-Service partnerships.

The ability of different information technology systems, software applications, and data formats to communicate, exchange data, and use the information that has been exchanged effectively. Interoperability is a critical design requirement in open banking, healthcare IT, and enterprise software, and is increasingly mandated by regulation.

A financial ecosystem built on blockchain technology that provides financial services — including lending, borrowing, trading, insurance, and asset management — without traditional intermediaries such as banks, brokerages, or exchanges. DeFi protocols use smart contracts to automate financial transactions and are typically open-source, permissionless, and composable.

A regulatory authorisation granted to financial technology companies permitting them to offer specific financial services such as payments, lending, investment management, or insurance. Licencing requirements vary by jurisdiction and activity — in the UK, the FCA regulates fintech firms under frameworks including the Payment Services Regulations, the Electronic Money Regulations, and the FCA Regulatory Sandbox.

Artificially generated data that mimics the statistical properties of real-world datasets, used to train machine learning models when actual data is scarce, sensitive, or expensive to obtain. Synthetic data enables AI development in privacy-constrained domains such as healthcare and finance, while reducing data acquisition costs and regulatory exposure.