If you noticed a 10% decrease in an app’s conversion rate, what steps would you take to investigate and resolve the issue?

A 10% drop in conversion rate warrants immediate investigation. My approach would be systematic:

1. Define and Isolate: First, I'd clarify which conversion event is being measured (e.g., sign-up, booking, purchase) and confirm the timeframe and scope of the decrease. Is it across all users, specific segments, platforms (iOS/Android), or regions?

2. Data Deep Dive: I'd analyze relevant metrics leading up to and including the conversion event. This includes user acquisition sources, traffic patterns, engagement metrics (session duration, feature usage), drop-off points in the user flow, and any recent changes to the app or marketing campaigns.

3. Hypothesize and Test: Based on the data, I'd form hypotheses. For example, a recent UI change might be confusing users, a bug could be preventing completion, or a marketing campaign might be attracting less qualified leads. I'd then use A/B testing or user session recordings to validate these hypotheses.

4. Root Cause Analysis: Once a likely cause is identified, I'd dig deeper to understand the underlying reason. This might involve collaborating with engineering to check for technical issues, product teams to review recent feature releases, or marketing to assess campaign performance.

5. Implement and Monitor: After identifying and confirming the root cause, I'd work with the relevant teams to implement a solution (e.g., bug fix, UI adjustment, campaign optimization). Crucially, I would closely monitor the conversion rate post-implementation to ensure the issue is resolved and no new problems have arisen.