@Abbas Ali ,The Microsoft Partner Center has some promotional decks available. You can filter by solution area, subject, industry, and other filters. https://partner.microsoft.com/en-us/asset#/
Many of the individual Azure service documentation pages also have resources like this, like this page for Azure DevOps that has decks, presentations, and videos. https://zcusa.951200.xyz/en-us/devops/events-and-talks/
Microsoft Learn has demonstrations and training that you could leverage as well. https://zcusa.951200.xyz/en-us/training/azure/
https://zcusa.951200.xyz/en-us/azure/key-vault/general/overview
If you have a Partner sponsor you could also reach out to that POC, but if there's anything specific you're looking for you can reach out to me personally at AzCommunity@microsoft.com ("Attn: Marilee Turscak"), and I can reach out to see what I can find. I may not be able to provide a resource for everything but do some digging if you had a specific ask.
Let me know if this helps and if you have additional questions.
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