http://www.javaworld.com/article/2078647/open-source-tools/which-freaking-paas-should-i-use-.html
above material helped me a lot
there are several options, let's list any hereGoogle App Engine
+ free- sandbox
- limited JRE libraries
Cloud Foundry
- probably expensive (can't run spring boot on 128 RAM)+ portable
+ very Spring oriented
Heroku
- rather Ruby-centricCloudbees
- expensive- where on this page can I find JAVA HOSTING?
I think I will try cloud foundry