SAN FRANCISCO (CBS SF) — Tech companies strutted their pride Sunday as Apple, Google, Yahoo, Facebook, Uber and hundreds other high-tech employees came out in full force for the 45th Annual Gay Pride Parade in San Francisco.

Legions of techies donned t-shirts, and carried banners and flags as they walked down Market Street alongside elaborate floats.

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This year’s Pride Celebration is likely to go down as the biggest Pride parade in San Francisco history in light of Friday’s historic Supreme Court ruling making same-sex marriage legal in all 50 states.

Gary Virginia, board president of SF Pride, which organizes the celebration told CNET it makes good business sense for tech companies to support LGBT rights.

“They attract a younger population for their workforce, and it’s been proven that social attitudes are changing,” said Virginia.

Apple CEO, Tim Cook marched along with 8000 Apple employees. Cook made history as the the first openly gay CEO of a Fortune 500 company. He along with San Francisco-based’s CEO Marc Benioff are huge advocates for gay rights.

Yahoo, which had around 1,000 employees marching in Pride Parades worldwide this year, was ranked as industry leader and considered a “Best Place to Work” for the LGBT community by the Human Rights Campaign.

One tweeter gave the prize for best parade float.

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When Facebook came to Pride. 2012. #sfpride #tbt

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