For the last couple of years , there has been a lot of giddiness around the creation or Rich Internet Applications or RIAs . Their fluidity , animation and ability to present and manipulate large amounts of data makes them readily appealing to businesses that want to go beyond the linear processes that HTML web sites offer . They are becoming more common and the demand from clients is increasing .

Answer the following question: What subject is the narrator discussing ?
They 're talking about tech .