What type of support allows interactive communication for quick resolution between customers and support staff?

The nature of support that facilitates interactive communication for swift problem resolution between customers and support staff is instant messaging. This method allows for real-time dialog, which can significantly enhance the interaction between the customer and the support representative. Unlike other options, instant messaging enables immediate responses, fostering dynamic conversation where questions can be answered and issues can be clarified instantaneously. This direct line of communication can lead to faster resolutions compared to more asynchronous methods, like email or support tickets, which may take longer to address due to delayed responses.

Desktop support focuses on handling technical issues related to user hardware and software, which may not inherently guarantee quick interactions with customers. Social media support, while interactive, often involves a wider audience and can be less direct, leading to potential delays in personal communication. Self-service portals are useful for providing customers with access to resources and solutions, but they do not facilitate live interaction, which is essential for quick problem-solving in urgent situations.