Lichtsteiner has 99 caps for Switzerland and will captain his country at the World Cup.
Arsenal fans will no doubt feel this is a major test of the board's commitment to the new era and many supporters will be imploring Gazidis and co.to back their new manager all the way.
Emery can be pleased to get such a quality, title-winning player for free. The big objective is to come back on the highest level.
The 34-year-old is said to have joined the London-based club on a free transfer after his contract at Juventus expired at the end of last season's campaign after spending seven seasons.
Lichtsteiner is a serial victor having won eight League Championships during his career in his native Switzerland and Italy.
The Swiss star, 34, started his senior career in 2001 with Swiss club Grasshopper Zurich, where he won the league title in 2003.
Lichtsteiner added, "I'm a right-back who likes to attack but also know when you need to stay behind". However players with the wealth of top level experience Lichtsteiner has are in short supply, having spent 10 years with top Italian clubs Lazio and Juventus.
Lichtsteiner's arrival is expected to be the start of a busy transfer window for Arsenal with Greek global defender Sokratis Papastathopoulos expected to sign for the club in the next 48 hours.