open-consul/website/content/docs/lambda/index.mdx

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---
layout: docs
page_title: AWS Lambda
description: >-
Consul supports registering AWS Lambda functions as Consul services. This
section documents the process of integrating AWS Lambda with Consul services.
---
# AWS Lambda
Lambda functions are programs or scripts that run in AWS Lambda. The functions process events and return responses. Refer to the [AWS Lambda website](https://aws.amazon.com/lambda/) for additional information.
## How AWS Lambda Functions on Consul Work
You can register AWS Lambda functions in Consul and invoke them from mesh services.
### Registering Lambda Functions
Registering AWS Lambda functions into Consul requires [registering a service](/docs/discovery/services)
and storing a [service defaults configuration entry](/docs/connect/config-entries/service-defaults)
into Consul.
We recommend using [Lambda registrator](https://github.com/hashicorp/terraform-aws-consul-lambda-registrator)
to automatically synchronize Lambda functions into Consul. Lambda functions can
also be manually registered into Consul when using Lambda registrator is not possible.
See the [Registration page](/docs/lambda/registration) for more information
about registring Lambda functions into Consul.
### Invoking Lambda Functions from Consul Service Mesh
Lambda functions can be invoked by any mesh service directly from connect proxies or
through terminating gateways. The [Invocation page](/docs/lambda/invocation)
explains how to invoke Lambda functions from Consul service mesh services.