Griffiths has overseen a major improvement in the form of Perth Glory, who at the start of the season were predicted by many to be the eventual wooden spooners, with three consecutive wins - two of them with clean sheets - prior to another solid defensive performance last weekend albeit in a 1-0 loss at home to title joint-favourites Sydney FC.
Glory have rocketed up the ladder to fifth place with ten points and are poised to capitalise on their short-term form with winnable home games against Adelaide United, Central Coast Mariners and Brisbane Roar either side of consecutive trips to Melbourne over the Christmas-New Year holiday period.
Glory owner Ross Pelligra announced the signing on Tuesday, publicly expressing his confidence that Griffiths "has shown all the right attributes to successfully lead our proud football club forward".
“This is a decision we have not taken lightly and one that we have deliberately taken our time with, keeping all our options open and canvassing many highly-qualified applicants," Pelligra continued.
"Adam, however, has proven himself to be an outstanding candidate with undoubted talent and potential and someone that we want to back in 100%.
“Results are very important, but culture is more so.
“We feel very confident that Adam has the ability to build a strong club culture with players and staff of good character that will ultimately deliver the club sustained success.
“The recent performances have shown what our squad is capable of achieving and we look forward to seeing Adam continuing this great work and leading us down a path of further success, giving our Members and fans and all Western Australians the Glory they deserve.”
Griffiths' ultimate goal will be to add to his 2007/08 A-League Championship won as a player at the Newcastle Jets, the highlight of a distinguished playing career that included more than 160 appearances as a defensive utility for several Australian clubs during both the NSL and A-League eras.