Vygotsky's theory of social interaction states that cognitive development will be optimal through student interaction, and students learning from each other.
In the 21st century the technology is (or should be) ubiquitous enough for every student to become at least partially exposed to computer programs and gadgets that will make learning more relevant to the needs of millennial learners.
This being said, technology is perfect for cooperative research skills in which students can be assigned to conduct a search together and sharing the differences and similarities of their search engines. The use of the Smartboard is proven to be a highly effective tool to promote and entice student participation in the classroom. The mere use of even an ELMO projector allows students to share their readings, pictures, and other art and encourages conversation and comparison, feedback, and communication.
Definitely technology is a wonderful conduit for communication, and communication is the essential element in Vygotsky's philosophy.