Acquia Cloud Platform is a Drupal-tuned application lifecycle management suite with an infrastructure to support Drupal deployment workflow processes.
Acquia Personalization (formerly Acquia Lift) lets you track customers' behavior throughout your website.
Drupal is a free and open-source web content management framework.
Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Sentry is an open-source platform for workflow productivity, aggregating errors from across the stack in real time.
Varnish is a reverse caching proxy.