Not everything is developed by the single vendor. Sometimes they buy a program from a vendor they don't fully trust.
There is also security, I don't care if someone hacks my radio system nearly as much if someone hacks the brake system. Containers is one part of the total package to isolate parts so if there is a hack the whole system isn't taken out.
Computers are a large system. Someone in "the other group" making a mistake can bring your part of the system down. Much of the code is written in C or C++, and so one "old school" programmer can make a mistake and write past their memory into a data structure you are using, and the bug report goes to you not them.
If you have the above system, when splitting the monolith apart you will discover libfoo.so that both depend on, and the two groups will want to upgrade separately: containers allow this to happen, without modifying your build system to give them different versions or otherwise allow two different libraries with the same name to sit on your system.
The above is what is obvious enough that I can talk about it. (I work on an embedded system at John Deere so I cannot comment more than the above even if you ask.)
There is also security, I don't care if someone hacks my radio system nearly as much if someone hacks the brake system. Containers is one part of the total package to isolate parts so if there is a hack the whole system isn't taken out.
Computers are a large system. Someone in "the other group" making a mistake can bring your part of the system down. Much of the code is written in C or C++, and so one "old school" programmer can make a mistake and write past their memory into a data structure you are using, and the bug report goes to you not them.
If you have the above system, when splitting the monolith apart you will discover libfoo.so that both depend on, and the two groups will want to upgrade separately: containers allow this to happen, without modifying your build system to give them different versions or otherwise allow two different libraries with the same name to sit on your system.
The above is what is obvious enough that I can talk about it. (I work on an embedded system at John Deere so I cannot comment more than the above even if you ask.)