Lots of interviews (all remote these days). First was an HR screener, second was a few days later with a Senior Product manager, third was a week later and was a set of 4 interviews in 4 hours (known as 'Power Day'), and finally I had a large number of 'job fit' interviews with individual hiring managers to find the correct fit with me.
Overall, I appreciated the rigor that goes into this, even if it is a huge commitment and a bit of roller coaster. Most of the early process was transparent and I never doubted the intent. It wasn't until I got passed the Power Day and into 'job fit' that I became frustrated with the experience. At this point, I received very little to no feedback from recruiters or managers which was a VERY unpleasant experience given that ambiguity was starting to affect my ability to easily leave my old job.