Yes all of our services (except Exchange Mail) are hosted on SSDs in RAID5 or RAID1 with at least 2x read performance improvement and single drive failure tolerance. Some are hosted on SSDs with NVMe connectivity for even greater IO performance. Most websites don't see improvements from the read/write speed advantages of SSDs because read/write speeds are rarely maxed out; this is particularly true when using a RAID, which most hosts do. It's primarily the dramatic improvement in IOPS that SSDs provide that ensures top performance. Although NVMe connected SSDs will result in faster read/write performance for the operating system as a whole, website load times are not commonly dramatically improved. Instead you might see minor improvements during peak times.