Here's why Western Digital is buying SanDisk

Western Digital (WD) today announced that it's buying fellow data storage vendor SanDisk in a cash and stock deal worth about $19 billion.
The move comes as the IT industry is evolving rapidly as companies look for ways to embrace trends such as wearables, the Internet of Things and the cloud. The result has been a recent wave of mergers and acquisitions and investment activity in the data storage market.
WD's purchase of SanDisk comes on the heals of the data storage market's biggest-ever