ONVIF, a global standardization initiative for IP-based physical security products, introduced the TLS Configuration Add-on (release candidate) for secure communications between devices and clients. TLS Configuration is the first in a new category of ONVIF add-ons, which are specifications that extend ONVIF conformance to product features that address a specific use case or end-user need.
Add-ons enhance the ONVIF profile model by enabling conformance to additional features and capabilities not already included in ONVIF profiles. Profiles are permanent, fixed sets of features that enable a functional product to be developed solely on the profile. In contrast, add-ons are said to be easily adaptable to evolving technology/specification requirements and support version handling to accommodate new technology additions or updates.