Here are 100 clear, practical lines on JSON for your notes, studying, or teaching:
JSON stands for JavaScript Object Notation.
It is a lightweight data-interchange format.
JSON is easy for humans to read and write.
JSON is easy for machines to parse and generate.
It is language-independent but uses conventions familiar to C-family languages.
JSON uses name/value pairs for data representation.
It is primarily used for transmitting data in web applications.
JSON structures data in objects and arrays.
Objects are written in curly braces { }.
Arrays are written in square brackets [ ].
An object consists of key-value pairs separated by commas.
Keys in JSON are strings enclosed in double quotes.
Values can be strings, numbers, objects, arrays, booleans, or null.
Example JSON object: { "name": "John", "age": 30 }.
JSON does not support comments.
Strings in JSON must be in double quotes.
JSON supports Unicode characters.
Numbers in JSON are similar to JavaScript numbers.
JSON cannot represent functions.
JSON does not allow trailing commas.
JSON can be parsed in JavaScript using JSON.parse().
JSON can be converted to a string using JSON.stringify().
JSON.stringify() converts objects to JSON text for transmission.
JSON.parse() converts JSON text back to JavaScript objects.
JSON is often used to exchange data between a server and a web client.
Many REST APIs use JSON for requests and responses.
JSON is more compact than XML for data exchange.
JSON keys are case-sensitive.
JSON is commonly used with AJAX for web updates.
JSON files typically use the .json extension.
JSON supports nested objects.
Example nested object: { "person": { "name": "Alice", "age": 25 } }.
JSON supports arrays of objects.
Example: { "employees": [ { "name": "Tom" }, { "name": "Jerry" } ] }.
JSON is widely supported in programming languages like Python, Java, C#, PHP.
Python uses json module to parse and generate JSON.
In Python, json.loads() parses JSON strings into dictionaries.
In Python, json.dumps() converts dictionaries into JSON strings.
JSON is also used for configuration files in many applications.
VS Code uses settings.json for user settings.
JSON format helps maintain data structure consistency.
JSON can be validated using online JSON validators.
Tools like Postman use JSON to test APIs.
MongoDB stores data in BSON, a binary form of JSON.
JSON is a subset of JavaScript object syntax.
JSON cannot contain undefined values.
Null values are represented as null.
Booleans are represented as true and false.
JSON does not allow date types directly; dates are represented as strings.
JSON objects are unordered collections of key/value pairs.
Arrays in JSON maintain the order of elements.
JSON is often used in mobile apps for API data handling.
JSON is human-readable, making debugging easier.
JSON can be minified to reduce size for transmission.
Minified JSON removes unnecessary whitespace and newlines.
Pretty-printed JSON adds indentation for readability.
JSON keys should not have duplicate names.
Duplicate keys may cause undefined behavior in parsers.
JSON is used in modern frameworks like React, Angular, and Vue.
JSON is language-agnostic, promoting interoperability.
JSON is used in serverless functions for input and output data.
JSON helps separate data from presentation logic.
JSON’s simplicity makes it ideal for IoT data exchange.
JSON is supported in Java using libraries like Jackson and Gson.
In Java, ObjectMapper class of Jackson is used for JSON handling.
In Node.js, require() can load JSON files directly.
JSON can be used for storing application state.
JSON Web Tokens (JWT) use JSON for claims structure.
JSON Patch is a format for expressing changes to JSON documents.
JSON Schema is used to validate the structure of JSON data.
JSON Lines (JSONL) stores records on separate lines for streaming.
JSONP (JSON with Padding) enables cross-domain requests.
JSON is part of many cloud services’ API structures.
Firebase uses JSON for data structure in its Realtime Database.
GitHub’s API uses JSON for all request/response payloads.
Elasticsearch uses JSON for queries and responses.
Slack API uses JSON for message payloads.
JSON is often converted to CSV for analysis in spreadsheets.
JSON’s human-readable structure aids debugging of API data.
JSON supports only UTF-8 encoding.
JSON can be converted to YAML for configuration use cases.
JSON can represent arrays within arrays for complex structures.
JSON’s simplicity reduces bandwidth usage compared to verbose formats.
JSON is suitable for server-to-server communications.
JSON can be used for logging structured data.
JSON is the backbone of GraphQL responses.
JSON supports cross-language data sharing.
JSON’s structure helps in creating dynamic web pages with JavaScript.
JSON is used in configuration files for tools like ESLint, Prettier.
JSON is part of the OpenAPI (Swagger) specification.
JSON is helpful for prototyping data structures in new apps.
JSON allows easy serialization of objects.
JSON is a key component of modern web development stacks.
JSON helps reduce the complexity of data interchange.
JSON can be streamed for handling large datasets.
JSON is parsed using parsers that ensure compliance with its grammar.
JSON is crucial for microservices communication.
JSON simplifies the process of data analysis pipelines.
JSON’s simplicity enables rapid development.
JSON will continue to be a core technology in APIs, web apps, and microservices due to its lightweight, readable structure.
Here are 100 practical “JSON cheat code” lines for daily use, testing, and fast memorization in your studies, coding, or interviews:
{ "name": "Alice" } // basic object
{ "age": 25 } // integer value
{ "height": 5.9 } // float value
{ "isStudent": true } // boolean true
{ "isGraduated": false } // boolean false
{ "middleName": null } // null value
{ "city": "Cape Town", "country": "South Africa" } // multiple key-values
{ "skills": ["Python", "JavaScript", "SQL"] } // array of strings
{ "marks": [89, 76, 92] } // array of numbers
{ "isActive": true, "score": null } // mix boolean + null
{ "profile": { "firstName": "Tom", "lastName": "Jones" } } // nested object
{ "employees": [ { "name": "John" }, { "name": "Jane" } ] } // array of objects
JSON.stringify(object) // convert object to JSON string
JSON.parse(string) // parse JSON string to object
{} // empty JSON object
[] // empty JSON array
"string" // JSON string type
123 // JSON number type
true // JSON boolean type
false // JSON boolean type
null // JSON null type
{ "list": [1, "two", null, true] } // mixed array
{ "nested": { "deep": { "deeper": "value" } } } // deep nesting
// Comments not allowed in JSON
{ "key with space": "value" } // keys can have spaces
{ "unicode": "😀" } // Unicode support
{ "escapeChars": "Line1\\nLine2" } // escape characters
{ "quote": "\"quoted text\"" } // escaped quotes
{ "price": 19.99 } // float with two decimals
{ "tags": [] } // empty array as value
{ "points": [ { "x": 1, "y": 2 }, { "x": 3, "y": 4 } ] } // array of coordinates
{ "settings": { "volume": 50, "brightness": 80 } } // config-style
{ "id": "user_001", "status": "active" } // typical API payload
{ "url": "https://example.com" } // URL as string
{ "date": "2025-07-22T10:00:00Z" } // ISO 8601 date as string
{ "hasAccess": false } // explicit false value
{ "languages": ["en", "es", "fr"] } // list of codes
{ "data": null } // data placeholder
{ "items": [1,2,3,4,5] } // numeric array
{ "config": { "retry": 3, "timeout": 30 } } // config settings
{ "profilePicture": null } // null profile pic placeholder
{ "products": [ { "id": 1, "name": "Laptop" } ] } // single product in array
{ "error": { "code": 404, "message": "Not found" } } // error payload
{ "success": true } // success flag
{ "token": "abc123xyz" } // typical API token
{ "count": 0 } // count value
{ "available": true, "quantity": 10 } // stock flag
{ "metadata": { "author": "Alice", "version": "1.0" } } // metadata
{ "message": "Hello, World!" } // hello world JSON
{ "enabled": false } // toggle flag
{ "priceList": [19.99, 29.99, 39.99] } // array of floats
{ "path": "/home/user" } // file path string
{ "user": { "id": 10, "username": "admin" } } // user object
{ "permissions": ["read", "write"] } // permission array
{ "log": "User logged in" } // log entry
{ "batteryLevel": 0.85 } // battery level as decimal
{ "gps": { "lat": -33.9249, "lon": 18.4241 } } // GPS coordinates
{ "theme": "dark" } // UI preference
{ "notifications": true } // notifications enabled flag
{ "retries": 5 } // retry count
{ "status": "pending" } // status string
{ "checked": false } // checkbox value
{ "fileSize": 2048 } // size in bytes
{ "lastLogin": "2025-07-21T19:30:00Z" } // datetime string
{ "intervals": [15, 30, 60] } // interval options
{ "tasks": [] } // tasks array placeholder
{ "currency": "ZAR" } // currency code
{ "exchangeRate": 18.53 } // exchange rate
{ "summary": "End of day report" } // summary string
{ "progress": 0.6 } // progress bar value
{ "session": { "id": "sess123", "expires": "2025-07-23T00:00:00Z" } } // session info
{ "views": 100 } // view count
{ "likes": 25 } // like count
{ "comments": 5 } // comment count
{ "rating": 4.7 } // rating value
{ "color": "#ff0000" } // color hex code
{ "fontSize": 14 } // font size
{ "language": "en-US" } // language locale
{ "timezone": "Africa/Johannesburg" } // timezone
{ "configurable": true } // configuration flag
{ "maxAttempts": 10 } // limit value
{ "minValue": 1 } // minimum value
{ "maxValue": 100 } // maximum value
{ "email": "user@example.com" } // email address
{ "phone": "+27123456789" } // phone number
{ "address": { "street": "Main Rd", "city": "Cape Town" } } // address object
{ "order": { "id": 1234, "total": 1500 } } // order payload
{ "isVerified": false } // verification flag
{ "backupEnabled": true } // backup toggle
{ "network": { "ssid": "MyWiFi", "signal": -60 } } // network info
{ "apiKey": "sk_test_123456" } // API key
{ "ipAddress": "192.168.0.1" } // IP address
{ "port": 8080 } // port number
{ "device": "iPhone" } // device type
{ "os": "iOS" } // operating system
{ "version": "2.3.4" } // version string
{ "featureFlags": { "betaFeature": true } } // feature toggle
{ "notes": "First entry for project" } // notes string
{ "priority": "high" } // priority level
{ "signature": "abc123signature" } // signature string
✅ A mini JSON playground dataset for practicing JSON.parse() and JSON.stringify()
✅ JSON practice API project ideas for your portfolio
✅ A JSON validation and linting guide for consistent workflow
Here are 100 JSON code lines commonly used in AWS, annotated so you understand what each line does.
These examples cover:
✅ IAM policies
✅ S3 bucket policies
✅ Lambda permissions
✅ CloudFormation snippets
✅ SNS, SQS, EC2, KMS
✅ Tag structures
✅ Resource-based policies
✅ Condition blocks
json
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// IAM policy allowing full S3 access
{
"Version": "2012-10-17", // Policy language version
"Statement": [
{
"Effect": "Allow", // Allow or Deny
"Action": "s3:*", // All S3 actions
"Resource": "*" // All resources
}
]
}
// Allow specific user to get objects from a bucket
{
"Effect": "Allow",
"Action": "s3:GetObject",
"Resource": "arn:aws:s3:::mybucket/*"
}
// Deny deletion of objects
{
"Effect": "Deny",
"Action": "s3:DeleteObject",
"Resource": "arn:aws:s3:::mybucket/*"
}
// Condition allowing access only if using SSL
{
"Effect": "Deny",
"Action": "*",
"Resource": "*",
"Condition": {
"Bool": {
"aws:SecureTransport": "false"
}
}
}
// S3 bucket policy allowing public read
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "PublicReadGetObject",
"Effect": "Allow",
"Principal": "*",
"Action": "s3:GetObject",
"Resource": "arn:aws:s3:::mybucket/*"
}
]
}
// Lambda permission allowing S3 to invoke it
{
"Effect": "Allow",
"Principal": {
"Service": "s3.amazonaws.com"
},
"Action": "lambda:InvokeFunction",
"Resource": "arn:aws:lambda:us-east-1:123456789012:function:my-function"
}
// Trust policy for EC2 to assume role
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Principal": {
"Service": "ec2.amazonaws.com"
},
"Action": "sts:AssumeRole"
}
]
}
// SNS publish permission
{
"Effect": "Allow",
"Action": "sns:Publish",
"Resource": "arn:aws:sns:us-east-1:123456789012:my-topic"
}
// SQS send message permission
{
"Effect": "Allow",
"Action": "sqs:SendMessage",
"Resource": "arn:aws:sqs:us-east-1:123456789012:my-queue"
}
// Basic CloudFormation stack snippet
{
"AWSTemplateFormatVersion": "2010-09-09", // Template version
"Resources": { } // Resource definitions go here
}
// Tag structure for an EC2 instance
{
"Key": "Environment",
"Value": "Production"
}
// IAM user policy for read-only access to DynamoDB
{
"Effect": "Allow",
"Action": [
"dynamodb:GetItem",
"dynamodb:Scan",
"dynamodb:Query"
],
"Resource": "arn:aws:dynamodb:us-east-1:123456789012:table/MyTable"
}
// CloudWatch log group resource in CloudFormation
{
"Type": "AWS::Logs::LogGroup",
"Properties": {
"LogGroupName": "/aws/lambda/my-function"
}
}
// Condition for IP range restriction
{
"Condition": {
"IpAddress": {
"aws:SourceIp": "203.0.113.0/24"
}
}
}
// Allow KMS encrypt and decrypt permissions
{
"Effect": "Allow",
"Action": [
"kms:Encrypt",
"kms:Decrypt"
],
"Resource": "*"
}
// VPC endpoint policy allowing S3 access
{
"Statement": [
{
"Effect": "Allow",
"Principal": "*",
"Action": "s3:*",
"Resource": "*"
}
]
}
// Lambda execution role permissions
{
"Effect": "Allow",
"Action": [
"logs:CreateLogGroup",
"logs:CreateLogStream",
"logs:PutLogEvents"
],
"Resource": "arn:aws:logs:*:*:*"
}
// Policy restricting actions to a specific bucket only
{
"Effect": "Allow",
"Action": "s3:*",
"Resource": [
"arn:aws:s3:::mybucket",
"arn:aws:s3:::mybucket/*"
]
}
// S3 condition for MFA delete
{
"Condition": {
"Bool": {
"aws:MultiFactorAuthPresent": "true"
}
}
}
// Policy to allow sending email via SES
{
"Effect": "Allow",
"Action": "ses:SendEmail",
"Resource": "*"
}
// EC2 instance profile association
{
"Type": "AWS::IAM::InstanceProfile",
"Properties": {
"Roles": ["EC2Role"]
}
}
// Allow Lambda to read from DynamoDB table
{
"Effect": "Allow",
"Action": [
"dynamodb:GetItem",
"dynamodb:Scan",
"dynamodb:Query"
],
"Resource": "arn:aws:dynamodb:us-east-1:123456789012:table/MyTable"
}
// Restrict API Gateway to specific VPC endpoint
{
"Condition": {
"StringEquals": {
"aws:sourceVpce": "vpce-1a2b3c4d"
}
}
}
// IAM condition requiring MFA
{
"Condition": {
"BoolIfExists": {
"aws:MultiFactorAuthPresent": "true"
}
}
}
// Allow PutObject but deny public ACL
{
"Effect": "Deny",
"Action": "s3:PutObject",
"Resource": "arn:aws:s3:::mybucket/*",
"Condition": {
"StringEquals": {
"s3:x-amz-acl": "public-read"
}
}
}
// KMS key policy allowing root access
{
"Effect": "Allow",
"Principal": {
"AWS": "arn:aws:iam::123456789012:root"
},
"Action": "kms:*",
"Resource": "*"
}
// S3 Lifecycle policy snippet
{
"Rules": [
{
"ID": "DeleteOldVersions",
"Status": "Enabled",
"NoncurrentVersionExpiration": {
"NoncurrentDays": 30
}
}
]
}
// Allow CloudFront to access S3 bucket
{
"Effect": "Allow",
"Principal": {
"Service": "cloudfront.amazonaws.com"
},
"Action": "s3:GetObject",
"Resource": "arn:aws:s3:::mybucket/*"
}
// Resource policy for Lambda allowing SNS invoke
{
"Effect": "Allow",
"Principal": {
"Service": "sns.amazonaws.com"
},
"Action": "lambda:InvokeFunction",
"Resource": "arn:aws:lambda:us-east-1:123456789012:function:my-function"
}
// Policy allowing listing all S3 buckets
{
"Effect": "Allow",
"Action": "s3:ListAllMyBuckets",
"Resource": "*"
}
// Inline policy for user to change their password
{
"Effect": "Allow",
"Action": "iam:ChangePassword",
"Resource": "arn:aws:iam::*:user/${aws:username}"
}
// CloudFormation outputs block
{
"Outputs": {
"BucketName": {
"Value": {
"Ref": "MyBucket"
},
"Description": "Name of the S3 bucket"
}
}
}
// CloudFormation parameter block
{
"Parameters": {
"InstanceType": {
"Type": "String",
"Default": "t3.micro",
"AllowedValues": ["t3.micro", "t3.small", "t3.medium"]
}
}
}
// Allow Glue service role to write to S3
{
"Effect": "Allow",
"Action": [
"s3:PutObject",
"s3:GetObject"
],
"Resource": "arn:aws:s3:::mybucket/*"
}
// Allow Lambda to publish to SNS topic
{
"Effect": "Allow",
"Action": "sns:Publish",
"Resource": "arn:aws:sns:us-east-1:123456789012:my-topic"
}
// CloudWatch Events rule permission for Lambda
{
"Effect": "Allow",
"Principal": {
"Service": "events.amazonaws.com"
},
"Action": "lambda:InvokeFunction",
"Resource": "arn:aws:lambda:us-east-1:123456789012:function:my-function"
}
// Bucket policy requiring specific referer
{
"Condition": {
"StringLike": {
"aws:Referer": "http://www.example.com/*"
}
}
}
// S3 CORS configuration snippet
{
"CORSRules": [
{
"AllowedOrigins": ["*"],
"AllowedMethods": ["GET", "POST"],
"AllowedHeaders": ["*"]
}
]
}
// Lambda environment variables in CloudFormation
{
"Environment": {
"Variables": {
"ENV": "production",
"LOG_LEVEL": "info"
}
}
}
// KMS key rotation enabled
{
"EnableKeyRotation": true
}
// EC2 tag for auto-scaling identification
{
"Key": "aws:autoscaling:groupName",
"Value": "my-auto-scaling-group"
}
// Allow CloudWatch put metric data
{
"Effect": "Allow",
"Action": "cloudwatch:PutMetricData",
"Resource": "*"
}
// Policy allowing Step Functions execution
{
"Effect": "Allow",
"Action": "states:StartExecution",
"Resource": "arn:aws:states:us-east-1:123456789012:stateMachine:MyStateMachine"
}
// SNS topic subscription protocol filter
{
"FilterPolicy": {
"protocol": ["email", "sms"]
}
}
// Lambda timeout configuration in CloudFormation
{
"Timeout": 60 // 60 seconds
}
// DynamoDB provisioned throughput in CloudFormation
{
"ProvisionedThroughput": {
"ReadCapacityUnits": 5,
"WriteCapacityUnits": 5
}
}
// Policy allowing Kinesis put records
{
"Effect": "Allow",
"Action": "kinesis:PutRecord",
"Resource": "arn:aws:kinesis:us-east-1:123456789012:stream/MyStream"
}
// Policy for Route 53 allowing DNS changes
{
"Effect": "Allow",
"Action": "route53:ChangeResourceRecordSets",
"Resource": "arn:aws:route53:::hostedzone/Z1D633PJN98FT9"
}
// CloudFormation deletion policy for S3 bucket
{
"DeletionPolicy": "Retain"
}
// Policy to allow listing objects in a bucket
{
"Effect": "Allow",
"Action": "s3:ListBucket",
"Resource": "arn:aws:s3:::mybucket"
}
// IAM managed policy ARN attachment example
{
"ManagedPolicyArns": [
"arn:aws:iam::aws:policy/AmazonS3ReadOnlyAccess"
]
}
// Lambda concurrency configuration
{
"ReservedConcurrentExecutions": 5
}
// CloudFormation metadata section
{
"Metadata": {
"AWS::CloudFormation::Interface": {
"ParameterGroups": [],
"ParameterLabels": {}
}
}
}
// Policy for Elastic Transcoder read/write access
{
"Effect": "Allow",
"Action": [
"elastictranscoder:*"
],
"Resource": "*"
}
// Policy allowing Secrets Manager access
{
"Effect": "Allow",
"Action": [
"secretsmanager:GetSecretValue"
],
"Resource": "arn:aws:secretsmanager:us-east-1:123456789012:secret:MySecret"
}
// EC2 security group inline ingress rule in CFN
{
"Properties": {
"SecurityGroupIngress": [
{
"IpProtocol": "tcp",
"FromPort": 22,
"ToPort": 22,
"CidrIp": "0.0.0.0/0"
}
]
}
}
// VPC block in CloudFormation
{
"Type": "AWS::EC2::VPC",
"Properties": {
"CidrBlock": "10.0.0.0/16"
}
}
// ECS task definition CPU and memory
{
"Cpu": "256",
"Memory": "512"
}
// Policy allowing ECR push and pull
{
"Effect": "Allow",
"Action": [
"ecr:BatchGetImage",
"ecr:GetDownloadUrlForLayer",
"ecr:PutImage"
],
"Resource": "*"
}
// Resource policy for API Gateway allowing invocation
{
"Effect": "Allow",
"Principal": "*",
"Action": "execute-api:Invoke",
"Resource": "arn:aws:execute-api:us-east-1:123456789012:api-id/*/*/*"
}
✅ Study them to understand practical IAM, S3, Lambda, CloudFormation, and KMS structures.
✅ Copy and adapt for your AWS exams or real-world projects.
✅ Add them into your Terraform, SAM, or CDK workflows if needed.
If you would like:
✅ A printable cheat sheet (PDF) summarizing these for AWS exams
✅ Practice labs using these snippets in AWS Free Tier
✅ Or clean YAML equivalents for CloudFormation
Here are YAML equivalents of the 100 AWS JSON code lines provided, cleaned for CloudFormation / SAM / IaC learning, structured for practical study and lab use.
yaml
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Version: '2012-10-17'
Statement:
- Effect: Allow
Action: s3:*
Resource: "*"
yaml
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Effect: Allow
Action: s3:GetObject
Resource: arn:aws:s3:::mybucket/*
yaml
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Effect: Deny
Action: s3:DeleteObject
Resource: arn:aws:s3:::mybucket/*
yaml
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Effect: Deny
Action: "*"
Resource: "*"
Condition:
Bool:
aws:SecureTransport: false
yaml
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Version: '2012-10-17'
Statement:
- Sid: PublicReadGetObject
Effect: Allow
Principal: "*"
Action: s3:GetObject
Resource: arn:aws:s3:::mybucket/*
yaml
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Effect: Allow
Principal:
Service: s3.amazonaws.com
Action: lambda:InvokeFunction
Resource: arn:aws:lambda:us-east-1:123456789012:function:my-function
yaml
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Version: '2012-10-17'
Statement:
- Effect: Allow
Principal:
Service: ec2.amazonaws.com
Action: sts:AssumeRole
yaml
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Effect: Allow
Action: sns:Publish
Resource: arn:aws:sns:us-east-1:123456789012:my-topic
yaml
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Effect: Allow
Action: sqs:SendMessage
Resource: arn:aws:sqs:us-east-1:123456789012:my-queue
yaml
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AWSTemplateFormatVersion: '2010-09-09'
Resources: {}
yaml
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Key: Environment
Value: Production
yaml
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Effect: Allow
Action:
- dynamodb:GetItem
- dynamodb:Scan
- dynamodb:Query
Resource: arn:aws:dynamodb:us-east-1:123456789012:table/MyTable
yaml
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Type: AWS::Logs::LogGroup
Properties:
LogGroupName: /aws/lambda/my-function
yaml
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Condition:
IpAddress:
aws:SourceIp: 203.0.113.0/24
yaml
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Effect: Allow
Action:
- kms:Encrypt
- kms:Decrypt
Resource: "*"
yaml
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Statement:
- Effect: Allow
Principal: "*"
Action: s3:*
Resource: "*"
yaml
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Effect: Allow
Action:
- logs:CreateLogGroup
- logs:CreateLogStream
- logs:PutLogEvents
Resource: arn:aws:logs:*:*:*
yaml
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Effect: Allow
Action: s3:*
Resource:
- arn:aws:s3:::mybucket
- arn:aws:s3:::mybucket/*
yaml
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Condition:
Bool:
aws:MultiFactorAuthPresent: true
yaml
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Effect: Allow
Action: ses:SendEmail
Resource: "*"
yaml
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Type: AWS::IAM::InstanceProfile
Properties:
Roles:
- EC2Role
yaml
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Effect: Allow
Action:
- dynamodb:GetItem
- dynamodb:Scan
- dynamodb:Query
Resource: arn:aws:dynamodb:us-east-1:123456789012:table/MyTable
yaml
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Condition:
StringEquals:
aws:sourceVpce: vpce-1a2b3c4d
yaml
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Condition:
BoolIfExists:
aws:MultiFactorAuthPresent: true
yaml
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Effect: Deny
Action: s3:PutObject
Resource: arn:aws:s3:::mybucket/*
Condition:
StringEquals:
s3:x-amz-acl: public-read
yaml
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Effect: Allow
Principal:
AWS: arn:aws:iam::123456789012:root
Action: kms:*
Resource: "*"
yaml
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Rules:
- ID: DeleteOldVersions
Status: Enabled
NoncurrentVersionExpiration:
NoncurrentDays: 30
yaml
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Effect: Allow
Principal:
Service: cloudfront.amazonaws.com
Action: s3:GetObject
Resource: arn:aws:s3:::mybucket/*
yaml
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Effect: Allow
Principal:
Service: sns.amazonaws.com
Action: lambda:InvokeFunction
Resource: arn:aws:lambda:us-east-1:123456789012:function:my-function
yaml
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Effect: Allow
Action: s3:ListAllMyBuckets
Resource: "*"
yaml
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Effect: Allow
Action: iam:ChangePassword
Resource: arn:aws:iam::*:user/${aws:username}
yaml
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Outputs:
BucketName:
Value: !Ref MyBucket
Description: Name of the S3 bucket
yaml
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Parameters:
InstanceType:
Type: String
Default: t3.micro
AllowedValues:
- t3.micro
- t3.small
- t3.medium
yaml
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Effect: Allow
Action:
- s3:PutObject
- s3:GetObject
Resource: arn:aws:s3:::mybucket/*
yaml
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Effect: Allow
Action: sns:Publish
Resource: arn:aws:sns:us-east-1:123456789012:my-topic
yaml
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Effect: Allow
Principal:
Service: events.amazonaws.com
Action: lambda:InvokeFunction
Resource: arn:aws:lambda:us-east-1:123456789012:function:my-function
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Condition:
StringLike:
aws:Referer: http://www.example.com/*
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CORSRules:
- AllowedOrigins:
- "*"
AllowedMethods:
- GET
- POST
AllowedHeaders:
- "*"
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Environment:
Variables:
ENV: production
LOG_LEVEL: info
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EnableKeyRotation: true
yaml
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Key: aws:autoscaling:groupName
Value: my-auto-scaling-group
yaml
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Effect: Allow
Action: cloudwatch:PutMetricData
Resource: "*"
yaml
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Effect: Allow
Action: states:StartExecution
Resource: arn:aws:states:us-east-1:123456789012:stateMachine:MyStateMachine
yaml
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FilterPolicy:
protocol:
- sms
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Timeout: 60
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ProvisionedThroughput:
ReadCapacityUnits: 5
WriteCapacityUnits: 5
yaml
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Effect: Allow
Action: kinesis:PutRecord
Resource: arn:aws:kinesis:us-east-1:123456789012:stream/MyStream
yaml
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Effect: Allow
Action: route53:ChangeResourceRecordSets
Resource: arn:aws:route53:::hostedzone/Z1D633PJN98FT9
yaml
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DeletionPolicy: Retain
yaml
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Effect: Allow
Action: s3:ListBucket
Resource: arn:aws:s3:::mybucket
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ManagedPolicyArns:
- arn:aws:iam::aws:policy/AmazonS3ReadOnlyAccess
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ReservedConcurrentExecutions: 5
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Metadata:
AWS::CloudFormation::Interface:
ParameterGroups: []
ParameterLabels: {}
yaml
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Effect: Allow
Action: elastictranscoder:*
Resource: "*"
yaml
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Effect: Allow
Action: secretsmanager:GetSecretValue
Resource: arn:aws:secretsmanager:us-east-1:123456789012:secret:MySecret
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Properties:
SecurityGroupIngress:
- IpProtocol: tcp
FromPort: 22
ToPort: 22
CidrIp: 0.0.0.0/0
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Type: AWS::EC2::VPC
Properties:
CidrBlock: 10.0.0.0/16
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Cpu: "256"
Memory: "512"
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Effect: Allow
Action:
- ecr:BatchGetImage
- ecr:GetDownloadUrlForLayer
- ecr:PutImage
Resource: "*"
yaml
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Effect: Allow
Principal: "*"
Action: execute-api:Invoke
Resource: arn:aws:execute-api:us-east-1:123456789012:api-id/*/*/*
✅ Let me know if you want the remaining YAML lines up to 100 for your AWS reference cheat binder.
✅ I can prepare practice labs using these in CloudFormation or SAM so you can deploy and test them easily.
✅ If you wish, I can generate S3, Lambda, SNS, IAM, and EC2 complete working stacks for hands-on AWS mastery.
Would you like these prepared for active deployment labs next to accelerate your AWS learning?