ClaudiaJS is one of the earliest of the deployment frameworks and tools. It is licensed under open source, and, at the time writing, it only supports AWS Lambda. ClaudiaJS is a Node.js library that helps to deploy Node.js projects on to AWS Lambda and API Gateway. It currently supports just the Node.js language. ClaudiaJS claims that it is not a framework, but a deployment tool, so the developer just calls it ClaudiaJS within their code and does not have to change their code structure. ClaudiaJS is built on top of AWS SDK and AWS CLI. It flags three types of JavaScript libraries:

• Command-line library
• API builder library
• Bot builder library

The first JavaScript library is a command-line...

Apex is yet another serverless framework that is built on the Go to manage AWS Lambda functions. It is an open source framework and uses Terraform for bootstrapping the resources, which makes it faster to execute. The features provided by the frameworks are the ability to deploy, test functions, roll back deployment, view metrics, and tail logs.

Although it does not support invoking the function locally, it does support multiple languages, such as Node.js, Python, Java, Rust, and Go. We can create various environments through Apex. It has good documentation and helps you to quickly get started with using the frameworks. However, Apex currently only supports AWS Lambda.

If you decide to write your functions in Python, then you can use Zappa to deploy them. Zappa is a CLI/command-line framework, and it is open source. Zappa currently supports Python WSGI applications, which are basically Flask and Django applications. It can deploy macro and micro applications. Zappa has a wide variety of features, such as the ability to deploy functions like API to AWS lambda and AWS API Gateway respectively. It can also configure AWS events sources.

Once deployed, we can also invoke the function through Zappa. It can fetch or tail the logs from the AWS. It also allows rollback to the previous version. We can set up multistage deployment (by stage, it means multiple environment deployments, such as dev, qa, uat, and prod).

Zappa also has the cool feature of being able to keep the Lambda function warm. This makes for better performance and decreases latency...

Serverless Framework is one of the most popular frameworks for building serverless architectures. It is an open source CLI, with about 23,000 stars on GitHub. There is also an enterprise edition that helps in setting up templates and providing support. This framework has been used by many companies, such as EA, Coca Cola, Expedia, and Reuters. It is a framework that supports lots of cloud service providers, such as AWS, Azure, Google, OpenWhisk, Kubeless, Oracle Fn, and many others. It has a very well-documented user guide containing quite a large number of examples to help you start using it. It supports lots of languages, such as Node.js, Python, Java, Scala, C#, Go, F#, Groovy, Kotlin, PHP, and Swift.

It supports the life cycle of serverless architecture, which can build, deploy, update, and delete. It supports function grouping for easy management of code...

In this chapter, we learned about different frameworks, such as ClaudiaJS, Zappa, and Apex. We also looked into a few examples of using them, but we mostly covered Serverless Framework extensively. We will be using Serverless Framework extensively in most of our tutorials while going through the book, because Serverless Framework fairs far better than other frameworks because it has better community support and support for multiple cloud providers. This means that you don't have vendor locking, as you do with some other frameworks. It also has a huge list of plugins for different types of cloud service, good blog support, and finally, some really good features for easy deployment into various different cloud providers.