Extending AWS Greengrass functionalities by implementing local AWS Lambda can optimize your resources. In this chapter, we will learn how to implement AWS Lambda to local AWS Greengrass, and how it will be accessed from IoT devices. The following is a list of topics that we will cover in this chapter:

• Introducing AWS Lambda
• Deploying AWS Lambda for AWS Greengrass on Raspberry Pi 3
• Accessing AWS Lambda from IoT devices
• Building IoT projects with AWS Lambda and AWS Greengrass