Is there a best practice or tutorial for building infrastructure like one click installs?

I’m interested in creating infrastructure and configuration management as code. Specifically, I have an application that I would like to configure on a LAMP stack and manage with an infrastructure/config management repo. So, I would like to create the code that will:

Create infrastructure of load balancer, IPs, etc. Create droplet(s) of certain size, location,etc. Configure each operating system (users, firewall, etc) Configure core software, Apache/NGinx, Mysql, PHP Move application code to server and install

Is that Terraform, Chef/Puppet/Ansible, and bash scripts mingled with repos, OR Building an image manually, then deploying as a snapshot (which I assume is similar to one click installs) ?

I would love to find a tutorial/guide that explained the best practices and steps for execution.