As mentioned in an earlier post, things that are not easy in R can be relatively simple in other languages. Another example would be connecting to Amazon Web Services. In relation to s3, although there are a number of existing packages, many of them seem to be deprecated, premature or platform-dependent. (I consider the cloudyr project looks promising though.)
If there isn’t a comprehensive R-way of doing something yet, it may be necessary to create it from scratch. Actually there are some options to do so by using AWS Command Line Interface, AWS REST API or wrapping functionality of another language.
http://jaehyeon-kim.github.io/2015/11/Quick-Test-to-Wrap-Python-in-R.html
solved Can we develop a Python API which wraps R code [closed]