Just to give some sense on productivity you can achieve once you know enough liveview
https://mathocrat.com/ this is a website I developed as a side project while working a full time job (job was in liveview too!)
This website currently can stream DRM videos and is deployed on barely 1 GB ram server with <5% CPU usage, 500MB RAM usage.
This is a pretty big win for me personally - considering what infra I would have to be setup just to achieve the above in other stacks.
Thanks for your comments and Excellent work. So basically you can run this site on minimal cost compared to other Stacks? - One question how did you manage the Auth for each USER, this is always a challenge and can be costly add on for this type of project?
Hey Neill. I see you’re in the UK as well, DM me and I’d be happy to share my experience. I was CTO at Stitched (https://www.stitched.co.uk, whole site is LiveView) for 5 years and led the rewrite of our CMS and customer facing site in Elixir - we kept a bunch of old ruby stuff around as we were a small team and the rewrite wasn’t justified.
While it could be a great idea, any rewrite is a fraught exercise and you really need to be sure it’s the right decision - regardless of stack.
Hi Chris, Thanks for the comments. At the moments its for New SaaS Projects rather than any rewrite, although like you we have a few internal systems that we might use as a starting point.
This may also be helpful: Adopting Elixir: From Concept to Production by Ben Marx, José Valim, Bruce Tate
What are your requirements?
Why the change is needed?
Did the developers made a POC (Proof of concept)?
Why as non tech guy are you making this decision? Shouldn’t a CTO help you with this?
Always remember, you don’t have to change everything at once. You don’t have to understand the technical benefits of any language to know if it worth or not.
Ask for small improvements and then, measure what you need to measure to see if it is worth.
If you want to be convinced, do a POC, and that’s that.
Hopefully this helps 
Hi Neill,
I couldn’t see that this question has been answered, so I thought I would send you this link:
The lib comes standard with the mix tool.
Additionally, the datastore access tool ecto has a good write-up on multi-tenancy:
I have built a couple of multi-tenant systems using elixir, each slightly different based on the project’s needs, and it has been pretty straightforward (Especially if using Postgres and leveraging its schemas).
Good luck
