What is Vendor Lock In
Vendor Lock In - an aspect that should always be considered at the beginning of a data science project.
Vendor Lock In is when you decided to use the platform and the tools from a specific vendor. When you do that you no longer have the freedom to simply switch vendors without investing huge amounts of work.
You may know the situation: At the beginning of a project, you have - perhaps a bit hastily - decided on a vendor. But now you realize that this was not the best choice for your project.
So you want to change to something else.
But that's a big problem: Both technically and financially, it is very difficult to do so, because nothing fits to your current setup.
Difficult switch from Google to AWS

For example: If you choose Google Cloud, you can't easily switch to AWS or anywhere else.
The Services from Google don't exist on AWS.