LesserGeek

This guide presents a structured approach for designing applications on Azure that are scalable, resilient, and highly available. It is based on proven practices that we have learned from customer engagements.

Here is the Microsoft Link

https://docs.microsoft.com/en-us/azure/architecture/guide/

Microsoft patterns & practices

https://github.com/mspnp

Cloud Application Architecture Guide

https://azure.microsoft.com/en-us/campaigns/cloud-application-architecture-guide/