This isn't for everyone, but for those with the intelligence, work ethic, proclivity...
There's a LOT of money to be made here.
There's a fascinating website, www.leetcode.com, which has a list of coding problems you can explore. Consistently hitting medium problems successfully? Let me know if you'd like a job. This is where really good money starts.
Specific to cloud computing, a slightly different route that is also profitable, is www.acloudguru.com.