What defines advisory techniques in web accessibility?

Advisory techniques in web accessibility are defined as suggested ways to improve accessibility. These techniques provide guidance on enhancing web content usability for individuals with disabilities, but they are not mandatory or strictly enforced. They allow web developers and organizations to adopt best practices based on context, resources, and specific user needs. By implementing these advisory techniques, developers can create more inclusive and accessible web experiences without the pressure of adhering to strict compliance measures.

In contrast, the other options imply a level of obligation or rigidity that advisory techniques do not possess. For example, strict guidelines or mandatory techniques signify that there are specific rules that must be followed to achieve compliance, while advisory techniques offer flexibility in implementing enhancements. Additionally, while technologies may evolve, advisory techniques acknowledge that there can be multiple ways to achieve improved accessibility based on varying circumstances and needs.