Cloud Functions

Scalable pay as you go Functions-as-a-Service (FaaS) to run your code with zero server management.

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    No servers to provision, manage, or upgrade

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    Automatically scale based on the load

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    Integrated monitoring, logging, and debugging capability

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    Built-in security at role and per function level based on the principle of least privilege

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    Key networking capabilities for hybrid and multi-cloud scenarios

Key features

Simplified developer experience and increased developer velocity

Cloud Functions has a simple and intuitive developer experience. Just write your code and let Google Cloud handle the operational infrastructure. Develop faster by writing and running small code snippets that respond to events. Connect to Google Cloud or third-party cloud services via triggers to streamline challenging orchestration problems.

Pay only for what you use

You are only billed for your function’s execution time, metered to the nearest 100 milliseconds. You pay nothing when your function is idle. Cloud Functions automatically spins up and backs down in response to events.

Avoid lock-in with open technology

Use open source FaaS (function as a service) framework to run functions across multiple environments and prevent lock-in. Supported environments include Cloud Functions, local development environment, on-premises, Cloud Run, and other Knative-based serverless environments.

View all features

Customers

Lucille games case study
Lucille Games automated infrastructure management with Cloud Functions.
Read the story

Story highlights

  • Aided growth of 15M users in 2 weeks with Google Cloud

  • Easily handled spikes in traffic while reducing server costs

  • Created new instances for game servers in just 20 seconds

Industry

Documentation

Quickstart
Getting started with Cloud Functions

Create and deploy a Cloud Function using only your web browser by using the Google Cloud Console.

Tutorial
Real-time file processing

Learn how to run code in response to file uploads to a Cloud Storage bucket.

Tutorial
Run code in response to HTTP requests

Create a Cloud Function that processes an HTTP request.

Tutorial
Trigger a function with Pub/Sub

Learn how to trigger a Cloud Function by publishing a message to a Pub/Sub topic.

Tutorial
Send emails and analyze data using BigQuery

Learn how to send emails through the SendGrid platform, receive SendGrid analytics data via webhooks, and load the analytics data into BigQuery for analysis.

Tutorial
Trigger a function that does ML to extract text from images

Learn how to use a Cloud Function to extract text from images using Cloud Vision API.

Tutorial
Interact with Firebase using HTTP-triggered Cloud Functions

Learn how to use an HTTP-triggered Cloud Function to interact with the Firebase Realtime Database.

Tutorial
Implement Slack Slash command to interact with users

Learn how to use a Cloud Function to implement a custom Slack Slash command to interact with users.

Tutorial
Developing applications with Google Cloud

In this course, developers learn how to design, develop, and deploy applications with Google Cloud, including using Cloud Functions for event-driven processing.

Use cases

Use case
Integration with third-party services and APIs

Use Cloud Functions to surface your own microservices via HTTP APIs or integrate with third-party services that offer webhook integrations to quickly extend your application with powerful capabilities such as sending a confirmation email after a successful Stripe payment or responding to Twilio text message events.

Integration with third party services workflow diagram
Use case
Serverless mobile back ends

Use Cloud Functions directly from Firebase to extend your application functionality without spinning up a server. Run your code in response to user actions, analytics, and authentication events to keep your users engaged with event-based notifications and offload CPU- and networking-intensive tasks to Google Cloud.

 Serverless mobile back ends workflow diagram
Use case
Serverless IoT back ends

Use Cloud Functions with Cloud IoT Core and other fully managed services to build back ends for Internet of Things (IoT) device telemetry data collection, real-time processing, and analysis. Cloud Functions allows you to apply custom logic to each event as it arrives.

 Serverless IoT back ends workflow diagram
Use case
Real-time file processing

Execute your code in response to changes in data. Cloud Functions can respond to events from Google Cloud services such as Cloud Storage, Pub/Sub, and Cloud Firestore to process files immediately after upload and generate thumbnails from image uploads, process logs, validate content, transcode videos, validate, aggregate, and filter data in real time.

 Real-time file processing workflow diagram
Use case
Real-time stream processing

Use Cloud Functions to respond to events from Pub/Sub to process, transform, and enrich streaming data in transaction processing, click-stream analysis, application activity tracking, IoT device telemetry, social media analysis, and other types of applications.

Real time stream processing diagram
Use case
Virtual assistants and conversational experiences

Easily build artificial intelligence into your applications. Cloud Functions with Cloud Speech API and Dialogflow can extend your products and services with voice- and text-based natural conversational experiences that help users get things done. Connect with users on Google Assistant, Amazon Alexa, Facebook Messenger, and other popular platforms and devices.

Virtual assistants flow diagram
Use case
Video and image analysis

Use Cloud Functions with Video Intelligence API and Cloud Vision API to retrieve relevant information from videos and images, enabling you to search, discover, and derive insight from your media content.

Video and image analysis diagram
Use case
Sentiment analysis

Use Cloud Functions in combination with Cloud Natural Language API to reveal the structure and meaning of text and add powerful sentiment analysis and intent extraction capabilities to your applications.

Sentiment analysis workflow diagram

All features

Connects and extends services to build complex applications Cloud Functions lets you treat all Google and third-party cloud services as building blocks. Connect and extend them with code, and rapidly move from concept to production with end-to-end solutions and complex workflows. Further, integrate with third-party services that offer webhook integrations to quickly extend your application with powerful capabilities.
End-to-end development and diagnosability Go from code to deploy, with integrated monitoring. Get full observability and diagnosability for your application with Cloud Trace and Cloud Debugger. Additionally, get support for local and disconnected development/debugging using open sourced functions framework.
Scales automatically Serve users from zero to planet-scale without even thinking about any infrastructure. Cloud Functions automatically manages and scales underlying infrastructure with the size of workload.
No server management Deploy your code and let Google run and scale it for you. Cloud Functions abstracts away all the underlying infrastructure, so that you can focus on your code and build applications faster than ever before.
Runs code in response to events Cloud Functions allows you to trigger your code from Google Cloud, Firebase, and Google Assistant, or call it directly from any web, mobile, or backend application via HTTP.
Pay only for what you use You are only billed for your function’s execution time, metered to the nearest 100 milliseconds. You pay nothing when your function is idle. Cloud Functions automatically spins up and backs down in response to events.
Avoid lock-in with open technology Use open source FaaS (function as a service) framework to run functions across multiple environments and prevent lock-in. Supported environments include Cloud Functions, local development environment, on-premises, Cloud Run, Cloud Run for Anthos, and other Knative-based serverless environments.

Pricing

Cloud Functions is priced according to how long your function runs, how many times it's invoked, and how many resources you provision for the function.

Partners

Speed up your journey to the cloud with these service partners.