Answer by Amogh Talpallikar:
Browser got smarter
Making your company’s website got easier
OpenSource became a lot cooler!
OAuth became mainstream
Web became more flexible with API based development
GUI got faster, stronger, better and fancier
Agile Development broke the niche
Cloud brought cheap computing powerhouse to developers
Wrapper over cloud made code deployment hassle-free
Web standard upgrade provided lots of power to the browsers
Mobile became common, The internet could fit in your pocket!
Distributed computing became a household name.NoSQL movement started!
Web-pages turned one step closer to desktop apps
The future is functional programming!