Step 1: Create a NuGet package.
NuGet and Maven are public package managers that support multiple feeds.
Step 2: Create an Azure Artifacts feed that uses upstream sources
If you want to use packages from multiple feeds, use upstream sources to bring packages from multiple feeds together into a single feed.
Step 3: Create a Micrtosoft Visual Studio project that includes all the packages
Consume NuGet packages from upstream sources: Now you can open Visual Studio and install packages from the upstream sources you just configured.
Reference:
https://docs.microsoft.com/en-us/azure/devops/artifacts/how-to/set-up-upstream-sources
