Open Banking allows consumers and small businesses in the UK to share their financial data with third parties securely and only with their consent. It aims to improve competition and innovation in financial services by enabling these third parties to develop new applications and services using this open banking data. The UK government initiated Open Banking following an investigation that found a need for more competition in retail banking. Now regulated firms can request customers' bank transaction history to provide services like money management tools, account switching, and personalized loans or insurance quotes.