Every Vendor Needs an Exit Plan Before You Depend on It

Before I depend on any vendor, I write down how I would leave it. Not because I plan to leave, but because a dependency without an exit plan is not a dependency, it is a hostage situation waiting to happen. The exit plan is the switching cost expressed as a real procedure: export the data, stand up the replacement, cut over. If I cannot write that procedure, I do not sign. That single discipline has kept every company in my portfolio movable.

Most teams treat the exit as a problem for future-them. Then a price hike, an acquisition, or an outage arrives, and future-them has no plan and no time. The exit plan is cheap to write on day one and expensive to invent under pressure. Write it first.

Why every vendor needs an exit plan

A vendor's leverage over you equals your cost to leave. When leaving is cheap, the vendor has to keep earning your business: fair prices, good service, honest terms. When leaving is expensive, the vendor can raise prices, degrade service, and change terms, and you eat it because the alternative is worse. The exit plan is how you keep that cost low and keep the leverage on your side.

This is not paranoia. Vendors get acquired. Pricing models change. Products get deprecated. Free tiers disappear. None of these are rare events over the life of a company. The question is never whether a vendor relationship will strain, it is whether you have a move when it does.

What a real exit plan contains

The data export. First and most important: can you get all your data out, in full, in an open format, today? Test it during the trial. A partial or throttled export is a red flag that becomes a crisis later. Data portability is the foundation of every exit, and if it is not there, nothing else in the plan matters.

The replacement. Name the specific thing you would move to. "We would find something" is not a plan. "We would move to self-hosted Postgres on our own box" is. Knowing the target means you already know the shape of the migration.

The cutover. How do you switch without downtime? Usually: run both in parallel, sync the data, flip the traffic, verify, decommission. I walked through that exact sequence in how to migrate off managed cloud without downtime. Writing it down for each critical vendor turns a scary migration into a checklist.

The cost and time. Put a number on it. Two days and a config change is fine. Two quarters and a rewrite means you are locked in and should have known before you signed.

How owned infrastructure makes the exit trivial

The reason my exits are cheap is that the bottom of my stack is a box I own. When your app runs on standard Linux on a VPS you control, the replacement is always "another box just like this one," and the cutover is a deploy. There is no proprietary runtime to escape and no platform-shaped rewrite waiting for you.

That is why I run the portfolio on HostSSH. Owning the base layer means every vendor above it is optional and replaceable, and my exit plan for most of them is one page. I made the broader case for owning that layer in what a deploy you actually control looks like.

The exit plan is also a design constraint

Here is the part people miss. Writing the exit plan before you commit changes what you build. If you know you must be able to leave, you choose open formats, standard protocols, and portable runtimes from the start. You avoid the deep proprietary hooks that feel convenient today and trap you tomorrow. The exit plan is not just insurance, it is an architecture review that happens at the right time, before the dependency is load-bearing.

I am not against managed services. I use plenty. The rule is simple: every one of them gets an exit plan before it touches production, and the plan has to be affordable. Managed Postgres passes because the export is clean and the replacement is obvious. A proprietary datastore with no export path fails, no matter how good the demo is.

Write the exit before you write the integration. If the exit is cheap, depend freely and sleep well. If the exit is expensive, you just found out while it is still cheap to change your mind, which is the whole point.