Felipe Binotto helps us save a bit of money in Azure:
Cost governance is an essential aspect of managing any cloud infrastructure. Azure Policy is a powerful tool that can help implement cost governance measures within your Azure environment. With Azure Policy, you can define and enforce rules to control costs, monitor usage, and optimize your resources.
These policies can be used to prevent the creation of resources that are not compliant with cost-saving measures or to apply tags to resources that identify them as cost-related resources. You can also use policies to track resource usage and generate alerts when certain thresholds are reached, allowing you to take proactive measures to optimize your resources and control costs.
Throughout this article I will provide some examples of Azure Policies you can use for cost optimization.
There’s some solid advice in here. Most of it boils down to knowing what you have running so things don’t slip between the cracks.