Times are over when high-availability solutions were rare: the availability and performance of websites and applications are more and more important. Usually, those factors have a direct impact on the success of a web application and these days you do not have to invest vast sums of money in such a solution for the hardware and the maintenance.
Dell Rack servers w/Dual Quad Core Xeon CPUs w/64GB RAM and CloudLinux
PHP 7, Ruby on Rails, Perl, Python, SSH and MySQL Databases.
The security of FTPS, the flexibility of SSH, and the convenience of mod_pagespeed.
300 applications (WordPress,Joomla, Drupal etc.) installable with one click.