The post-pandemic banking landscape has seen a significant shift toward online transactions due to customers’ inability to visit branches. This has led to a demand for Open Banking, allowing third-party access to customer data. While European banks, notably the ECB, swiftly adopted this, the UK initially limited it to 9 banks before expanding. India has allowed Open Banking through NBFC agents, but with cautious oversight. Despite its benefits, concerns about misuse persist. Regulators face the challenge of monitoring these third-party transactions to ensure compliance and prevent misconduct. This chapter explores the implementation of Open Banking in various countries and the regulatory framework needed to support it effectively.