You can check my profile - I know IBM very well.
I’ve played a prominent role in high tech for 30 years, cutting my teeth at Texas Instruments in their Bipolar Logic, designing their 1st distributed computing platforms across IBM mainframes, minis, and PCs (TI PCs of course). IBM was one of our largest customers and TI was one of their largest. In fact, they sent their engineers to TI for training on their OS and databases.
Also, I've worked with IBM's Global Services on different occasions when companies I worked for outsourced to GS - two "big brother" companies who owned several of the largest data platforms in the world (VP of products for one and chief global architect for the other).