AUSTIN, Texas–(BUSINESS WIRE)–BigCommerce (Nasdaq: BIGC), a leading Open SaaS ecommerce platform for fast-growing and established B2C and B2B brands, today reported its merchants experienced significant increases in sales on Thanksgiving Day and Black Friday compared to last year and outpaced overall retail performance during the critical start of Cyber Week. On Black Friday, BigCommerce merchant gross merchandise value (GMV) increased 31%, bolstered by a 25% increase in total orders and a 4.