Amplitude v/s Google Analytics: Which to Connect First?
Vantage connects to both Amplitude and Google Analytics. But if you are setting up for the first time and want to start with one, which gives you more product context? Here is a practical breakdown.
TL;DR
If your team focuses on product behavior (funnels, retention, feature adoption), connect Amplitude first. If your team cares more about traffic, acquisition channels, and page-level metrics, connect Google Analytics first. If you use both, connect both. Vantage merges the context.
What Vantage does with analytics data
Vantage uses analytics data in three specific ways, and understanding these helps you decide which tool to connect first:
Grounded PRD generation
When you generate a PRD, Vantage references real metrics from your analytics tool. Instead of "users drop off during onboarding," your spec says "23% of users drop off at step 3 of the onboarding flow (Amplitude, last 30 days)." The claim is sourced and verifiable.
Requirement-tied dashboards
Build dashboards where each chart is connected to a specific product requirement. When leadership asks about feature impact, the analytics data is already tied to the decision that drove the feature.
Rebuild triggers
When a metric connected to a spec changes significantly, Vantage flags the affected requirements for review. This is how specs stay current without manual monitoring.
Amplitude with Vantage
Amplitude is a product analytics tool built for behavioral data. It excels at funnels, cohorts, retention curves, and feature adoption metrics. For Vantage users, this means:
- Richer behavioral context in generated specs (funnel drop-offs, retention rates, feature usage)
- More granular rebuild triggers (metric changes scoped to specific features)
- Better query engine answers for product behavior questions
Best for: Product-led teams, SaaS companies, teams focused on user behavior and feature adoption.
Google Analytics with Vantage
Google Analytics (GA4) provides traffic, acquisition, and page-level engagement data. It is broader than Amplitude but less deep on product behavior. For Vantage users, this means:
- Traffic and acquisition context in generated specs (channel performance, landing page data)
- Page-level engagement metrics for content and marketing-driven features
- Free to use (no additional analytics tool cost)
Best for: E-commerce teams, content-driven products, teams that do not have Amplitude and want analytics context without adding a new tool.
When to connect both
Many teams use both tools for different purposes. Google Analytics handles traffic and acquisition. Amplitude handles product behavior. When you connect both to Vantage, the query engine can answer questions that span both data sets: "Which acquisition channel brings users with the highest 30-day retention?" requires traffic data from GA and retention data from Amplitude. Vantage merges the context.
Our recommendation
If you already use Amplitude, connect it first. The behavioral data is more directly useful for product requirements. If you only use Google Analytics, connect it. You will still get meaningful analytics context in your specs and dashboards. If you use both, connect both for the most complete picture.