SD vs CRM

Can someone clarify between SD vs CRM?

What sort of professional background is expected out of SD consultant or CRM consultant?

With Software / Solution / Service sales background, what could be appropriate module to go for. Many people I spoke with, recommend that with Sales background, SD is the module to go for...could it be simply because that's what it is called - SALES & Distribution 😊?

• but having had look at SD module I realise it has nothing to do with lead generation / conversion, sales funnel, maintain sales pipeline etc. Tasks I usually associate with Sales experience. Rather I see CRM more aligned to such experience.
• SD (to me) seems more suitable to those coming from Distribution / Order fulfilment background. Post-sales background if you wanna call it? or those who had been involved in selling some physical goods (like in a factory settings) that involved maintaining inventory of some physical goods, scheduling, delivering physical goods items

Any clarifications pls.? or could it be there is lot of overlap between SD and CRM, and both could as good a module to develop career in leveraging Sales background.

Thanks for the clarification!!

best wishes,

/V