Mastering AWS CloudFormation Templates Using JSON

Define and reference CloudFormation parameters to customize templates, set defaults and allowed values, and pass runtime inputs with Ref for resources, including no-echo passwords and special types like availability zones.

Learn how to add an internet gateway to a CloudFormation stack and attach it to a VPC using a JSON template, making the previous subnets public.

Create a CloudFormation route table and add a route to an Internet Gateway, then associate the table with two subnets in a VPC to enable internet access.

Learn to launch EC2 instances with CloudFormation templates in JSON, configuring key pairs, instance types, subnet and security groups, and enabling public IP access to a web server.

Explore how cfn-init structures EC2 bootstrapping through CloudFormation metadata, packages (including httpd), groups, users, sources, files, commands, and services, and learn to initialize and manage stack-driven configurations via user data.

Define a region map and use FindInMap with Ref to fetch region-specific AMI IDs for EC2 web servers, enabling dynamic region-based IDs.

Provision and integrate an elastic load balancer with ec2 instances in public subnets using a CloudFormation json template, including security groups, listeners, and health checks.

Learn how to define CloudFormation template outputs, export and import them across stacks, and use cross-stack access to reuse resources like the VPC ID.