Major changes since Puppet 5
Puppet 5 reflects the change in direction of Puppet as an organization, which was highlighted in the previous chapter. Its focus is on performance and scaling for infrastructure and stability in the language. This section will cover the changes that have taken place between Puppet 5 and 7; these versions reflect the versions of Puppet in use, which you are likely to see in code bases you are working with and in modules you would take from the Puppet forge. It will also cover some old patterns and issues you might see in code that reflect how Puppet was before version 5.
Puppet 5
Puppet 4 had a large number of deprecated features, which were almost all removed in Puppet 5. It is not worth listing all of these features, but just to set the context of the release, it was more about finishing what had been started in Puppet 4 by introducing more new features. It standardized package numbering, with all the Puppet packages starting at 5.0.0 instead of...