As others have said, the best path is to join an organisation building those things, but if you insist on as a solo person There are plenty of good resources

As others have said, the best path is to join an organisation building those things, but if you insist on as a solo person There are plenty of good resources online, free and paid. Paid options like Pluralsight have the most easy to find quality curated content that can guide you; alternatives like Cloud Academy will give you hands on labs. That's obviously in addition to the endless stuff on YouTube (the difficulty here is separating the wheat from the chaff) and in books and articles. Only by diving into dedicated, expert resources like those will you get the context, but mentoring within a team will be the fastest and surest way to competence on larger systems. Look for a job in a team.