In 2001 seventeen software developers met to discuss a way for more lightweight and flexible software development methotologies. They came up with the agile manifesto, the base work for todays agile software development methodologies like SCRUM. The four main statements are:
Individuals and interactions over processes and tools
Working software over comprehensive documentation
Customer collaboration over contract negotiation
Responding to change over following a plan
How can I celebrate?
You can read a book about agile methodologies and remember that todays short release cycles for many software applications are the result of agile software development.