Hello
In our current CI/CD pipeline, one of the persistent issues we’re facing is environment drift between development; staging & testing setups. 
Even with Docker and infrastructure-as-code, small changes like missing config files, outdated dependencies / subtle OS-level differences still cause builds / tests to pass in one environment and fail in another. 
This is especially frustrating when automated tests give inconsistent results.
We have looked into using container snapshots, environment replication tools & feature flags to minimize these inconsistencies. But the more services we introduce; the harder it gets to keep everything identical across environments.
I am curious how other teams are tackling this especially in fast-paced DevOps workflows where multiple deployments can happen in a single day. 
Checked Detecting and Managing Drift with Terraform guide for reference .
A junior teammate recently asked me what DevOps is & this issue came up as a perfect real-world example: it’s not just about automation but maintaining consistency & reliability across the software delivery pipeline. 
If anyone has a setup, tool/pattern that has helped eliminate environment drift, I would love to learn from your experience.
Thank you !!