Server-side Testing

How It Works

1. Step 1

   Set up in Tailor

   Name what changes, like a price.

2. Step 2

   Server picks a variant

   Each visitor gets one, instantly.

3. Step 3

   Tag counts conversions

   The Tailor tag on your page, same visitor.

4. Step 4

   See results

   On the usual test dashboard.

Good for prices, plans, checkout steps and search results. For headlines, images and buttons, a page test is simpler.

Set Up a Test

Go to Tests → New test → Run a server-side test.

1. Name the test.
2. Add a value for each thing the test changes, like a headline or a price.
3. Fill in each variant's values and choose how to split visitors.
4. Pick the goals that count as a win.
5. Send your developer the test key and value names, and the Node SDK setup. Their code must use the same names, spelled exactly the same.
6. Once the code is live, start the test.

Want to see a variant yourself? Ask your developer for your visitor id and add it under Preview visitors. Your visits won't count.

Results

Results show on the test's dashboard, like any Tailor test.

Not available yet: the What visitors did tab, and bounce-rate or Amplitude goals.

Changing a Test

• While it runs, you can change the name, goals and preview visitors. Values and the split are locked, so results stay fair.
• Stop: everyone sees your normal site within 5 minutes.
• Ramp to 100%: everyone sees the winner.
• Changed a value while stopped? Click Start new test, not Continue test, so old and new results don't mix.