Answer Wiki. A RACI matrix, also known as: 'Responsibility assignment matrix', is a very powerful tool to ensure all roles in a company/process are aligned. By going through each process step (activity) you can appoint several responsibilities for each rol involved.
WATCH: Blake Lively Battles a Shark in Gruesome New Full-Length Trailer for 'The Shallows'. The 28-year-old actress shot most of the film without the help of a stunt double, but what's more impressive is that she shot at least part of the movie while pregnant with her and husband Ryan Reynold's second child!
Serena van der Woodsen (Blake Lively) didn't seem too surprised by the revelation and even defended her ex-boyfriend and former stepbrother. Chuck Bass (Ed Westwick) and Blair Waldorf (Leighton Meester) -- who got married earlier in the episode -- eventually decided to forgive the Brooklyn-based author.