Nokia formed an alliance with Microsoft to replace Nokia's Symbian OS with Microsoft's Windows Phone OS in an effort to revive Nokia's fortunes. Stephen Elop, CEO of Nokia, implemented this strategy of switching to the Windows Phone OS to access more applications and change the way Nokia had been working previously. For the alliance to succeed, Nokia and Microsoft will need to improve smartphone hardware, make the software more user friendly, and increase the availability of applications while heavily promoting their products. Choosing Windows Phone over Android was the right decision for Nokia to differentiate itself from other companies and bring change that customers prefer, which could help increase demand for Nokia's products as more users adopt the new OS.