What is SOAR? Security orchestration, automation and response (SOAR) technology helps coordinate, execute and automate tasks between various people and tools, allowing companies to respond quickly to cybersecurity attacks and improve their overall security posture
MSSP: Managed Security Service Provider.
Without more background on where this question came from, I can see why you have questions.
I would argue with the origin of the question. Both can be considered correct. You can hire an MSSP to assist. I know several small companies who hired an MSSP to assist them. I also know they implemented SOAR. For example automating patching goes a long way to increasing security posture. There are a lot of assumptions and a big leap just to say "soar" is the best answer.