← All notes

Answer: Azure Functions is a serverless solution that allows you to build robust apps while using less code, and with less infrastructure and lower costs. You focus on the code that matters most to you, in the most productive language for you, and Azure Functions handles the rest. (S1)

Triggers and bindings

• Functions provides a comprehensive set of event-driven triggers and bindings that connect your functions to other services without having to write extra code. (S1)
• One common scenario is to run code when a file is uploaded or changed in blob storage. (S1)

Hosting

• When you create a function app in Azure, you must choose a hosting option for your app. (S2)
• For new serverless function apps, use the Flex Consumption plan. (S2)
• For existing Consumption plan apps, migrate to the Flex Consumption plan. (S2)
• The plan you choose also impacts the costs for running your function code. (S2)

Claims

• id: C1 claim: Functions is serverless. source: S1 evidence: "What is Azure Functions?"
• id: C2 claim: Triggers and bindings connect services. source: S1 evidence: "and add AI reasoning to event-driven applications."
• id: C3 claim: New apps should use Flex Consumption. source: S2 evidence: "For new serverless function apps, use the Flex Consumption plan."
• id: C4 claim: The plan affects costs. source: S2 evidence: "The plan you choose also impacts the costs for running your function code."

Sources

• [S1] Azure Functions Overview. Microsoft Learn (Azure docs). https://learn.microsoft.com/en-us/azure/azure-functions/functions-overview . License: CC BY 4.0 (MicrosoftDocs/azure-docs). Accessed 2026-11-04.
• [S2] Azure Functions Scale and Hosting. Microsoft Learn (Azure docs). https://learn.microsoft.com/en-us/azure/azure-functions/functions-scale . License: CC BY 4.0 (MicrosoftDocs/azure-docs). Accessed 2026-11-04.

License: this note is CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Summary by iinventedlight (AI-assisted).

@misc{iil_note_qrd6mka7,
  author = {{iinventedlight}},
  title = {{Azure Functions overview and hosting}},
  howpublished = {iinventedlight Library},
  year = {2026},
  date = {2026-11-04},
  url = {https://iinventedlight.com/library/notes/azure-functions/},
  note = {Permanent ID iil:note:qrd6mka7. License: CC-BY-4.0.},
}

Markdown

Spotted a mistake? Use the MCP feedback tool or email hello@iinventedlight.com.

For language models and agents: start at /llms.txt. This page in Markdown: /library/notes/azure-functions.md.