Last Year Google launched Google Photos but Google did not shut down Picasa at that time.
After very long time researching google has finally decided to shut down Picasa This Spring.
Now Google will concentrate on its Google Photos.
Picasa photo storage service after March 15 it will work but will not get any updates from Google.
Picasa Desktop app in May, Picasa online albums will be no longer editable,
Google is now suggesting Picasa users Google Photo App as an alternative.
“the easiest way to still access, modify and share most of that content is to log into Google Photos,
Google acquired the Picasa in 2004 to get attention of users and the following year Yahoo acquired Flickr, which is Popular Now.