Despite John Sculley leaving as Apple's (AAPL) - Get Report chief over twenty years ago, it's pretty clear that he is still very well-connected to what's happening at today's biggest tech companies. 'I think Amazon (AMZN) - Get Report will be an innovator in many areas,' said Sculley in an interview with TheStreet, admitting that he is a big fan of the tech giant's Echo personal digital assistant. Sculley continued, 'If you look at Google (GOOG) - Get Report , it will continue to dominate search for many years, but YouTube is also growing and mobile video is huge,' then adding that 'Facebook (FB) - Get Report is one of the most impressive companies to me', applauding the social media king's pivot toward mobile via acquisitions such as Instagram and WhatsApp. As for Twitter (TWTR) - Get Report , Sculley says the social media company has 'strong leadership' but is undergoing a reinvention, one that has seen founder Jack Dorsey return as CEO to hopefully jump-start slowing user growth. TheStreet's Brian Sozzi reports from New York.