For example an IOT device probably doesn't need PCIE as it would be more focused on sensors, power consumption, ultra low BOM, etc.
But in the mid - high end embedded space PCIE is already taking over. WiFi chips are switching from SDIO interfaces -> PCIE (finally!), storage is shifting from eMMC -> NVMe (uses PCIE), NICs have been PCIE for a long time, multi board designs are using PCIE b/w boards, etc.
For the higher end embedded systems that need the latency and throughput PCIE is king.
For example an IOT device probably doesn't need PCIE as it would be more focused on sensors, power consumption, ultra low BOM, etc.
But in the mid - high end embedded space PCIE is already taking over. WiFi chips are switching from SDIO interfaces -> PCIE (finally!), storage is shifting from eMMC -> NVMe (uses PCIE), NICs have been PCIE for a long time, multi board designs are using PCIE b/w boards, etc.
For the higher end embedded systems that need the latency and throughput PCIE is king.