I am new to web services, so kindly bear with me. I am building a WordPress website for a client where they require some data to be stored in a custom table. They have an application which fetches the data from some other vendor. Now they don't want to give us access to their application or the 3rd party vendor. So they want us to implement a web service which will consume the data sent by them to update our custom table.
Their exact words: "XML/SOAP based Web Service hosted at the Web Site"
Now I have been reading about WP rest API and also have been able to implement simple custom endpoints.
But since I am just a beginner, I am wondering whether is it possible for WP Rest API to consume HUGE data? For instance, would it be possible for them to send 1000 rows of data (to be updated) as parameter to the Web Service.
From what I have read, it looks like it is possible using SOAP and/or MTOM. But I cant seem to find out the answer to whether this is possible using REST? And whether REST is even preferred in this case or not?
BTW, I am not asking for the entire code, but just a few pointers to useful resources and a simple explanation would help.
Thanks in advance.