The cost of freedom is high: A Guide to Escaping Vendor Lock-In with FOSS

Two years ago our AWS Glue bill hit $10,000 a month. I moved 80 ETL pipelines to Apache Airflow on self-managed infrastructure and cut it to $400, a 96% reduction. But this talk isn't really about Airflow. It's about the pattern that bill represented, and a repeatable playbook for spotting and escaping lock-in wherever it shows up in your stack.

The counterintuitive lesson and the part that separates this from a tool comparison is that "it's open source" is not the protection you think it is. A single vendor that controls the license can change it on you. What makes tools like Valkey and OpenTofu genuinely safer is governance: under foundation stewardship, no single vendor can unilaterally relicense the project again. I'll show you how to read a project's governance model and license trajectory before you bet your infrastructure on it.

And I'll be honest about when FOSS does not win. Self-hosting trades a cloud bill for an ops bill and a maintenance burden that is very real , the same maintainer-overload that's burning out the wider ecosystem. I'll walk through the exit-cost calculation I actually ran: where Airflow-on-Kubernetes clearly paid off, and where I'd tell you to stay on the managed service and not pretend otherwise.

Attendees will leave with a one-page lock-in audit they can run against any vendor or dependency : exit cost, data gravity, license trajectory, governance model, and the true cost of self-hosting.

• A framework that classifies lock-in (cost, license, data) and a repeatable "lock-in audit" you can run on any vendor or dependency before committing.

• The real-world math behind a 96% cost cut — $10,000 to $400/month across 80 pipelines and how to tell whether your workload will see the same.

• Why governance, not just an open-source license, is what actually protects you, read through the Redis→Valkey and Terraform→OpenTofu relicensings.

• An honest account of when self-hosting wins and when the managed service is the right call, including the hidden ops and maintenance cost.