If you aren't the CEO, or have a direct line of influence to him, this issue can't be resolved. Your company didn't technically solution itself into this proble

If you aren't the CEO, or have a direct line of influence to him, this issue can't be resolved. Your company didn't technically solution itself into this problem, and it won't technically solution itself out of this problem. It requires painful, swift decisions and a massive culture shift. I would bet you have a CIO(or similar title) who owns the legacy stuff and a CTO where shadow IT lives. One of those people needs to report to the other and if that is the case today, one needs to go (which is likely the case regardless).