SF is home to several major business sectors including tech, financial and medical. Research and development of pharmaceutical products, medical electronics and genetic engineering too. Silicon Valley is the home of the ICT sector for thousands of startups. Network like crazy! SF has the highest density of tech, VC and executives and they are all hanging out together. You never know who you might meet by being open and friendly at every opportunity. Embrace Serendipity! Oh, and if you want to blend in with the locals don’t call it ‘San Fran’. To those in the know it’s either ‘SF’ or ‘San Francisco’!