Amherst College is considering switching the search engine we use on our website (Drupal) from Google Search Appliance (GSA) to Google Custom Search Engine (CSE). We are considering using Google Tag Manager (GTM) for A/B testing of GSA and CSE. We are configured to seamlessly switch between the two search options.
Does anyone have ideas, resources, or a checklist you've used for testing the site search and gauging relevancy?
If not GTM for A/B testing, any recommendation on what else to use?
All ideas are welcome.