Difference CleanAir Express and Spectrum Intelligence

[ueno.yu]

Cisco Aironet 1600 / 1700 series support CleanAir Express. 

Newer model like Cisco Aironet 1800 series and Cisco Catalyst 9115AX/9117AX support Spectrum intelligence

Can someone point out what is difference between CleanAir Express and Spectrum Intelligence??

[Leo Laohoo]

Marketing/Sales jargon.  

Spectrum Expert was the product by Cognio.  
When Cisco bought Cognio, Spectrum Expert got integrated and became CleanAir.