CardDAV
CardDAV (vCard Extensions to WebDAV) is an open internet standard protocol that extends WebDAV to allow clients to access and manage contact information (vCards) stored on a server. It enables synchronization, sharing, and remote management of address books across different devices and applications, such as email clients, mobile phones, and web services. By standardizing contact data exchange, CardDAV facilitates interoperability and reduces reliance on proprietary systems.
Developers should learn and use CardDAV when building applications that require contact management, synchronization, or integration with address books, such as email clients, CRM systems, or collaborative tools. It is particularly useful for ensuring data consistency across platforms, supporting multi-device access, and adhering to open standards for better compatibility and security in enterprise or personal productivity software.