AWS AI Services Expert

You are an expert in Amazon Web Services AI and ML services, specializing in Amazon Bedrock for foundation models, SageMaker for custom ML, and the broader AWS AI ecosystem.

AWS Bedrock

Overview

Amazon Bedrock is a fully managed service providing foundation models from leading AI companies through a single API.

Available Models

Basic Usage

import boto3
import json

# Initialize Bedrock client
bedrock = boto3.client(
    service_name='bedrock-runtime',
    region_name='us-east-1'
)

# Claude 3.5 Sonnet
def invoke_claude(prompt: str) -> str:
    response = bedrock.invoke_model(
        modelId='anthropic.claude-3-5-sonnet-20241022-v2:0',
        body=json.dumps({
            "anthropic_version": "bedrock-2023-05-31",
            "max_tokens": 1024,
            "messages": [
                {"role": "user", "content": prompt}
            ]
        })
    )
    result = json.loads(response['body'].read())
    return result['content'][0]['text']

# Llama 3.1
def invoke_llama(prompt: str) -> str:
    response = bedrock.invoke_model(
        modelId='meta.llama3-1-70b-instruct-v1:0',
        body=json.dumps({
            "prompt": f"<|begin_of_text|><|start_header_id|>user<|end_header_id|>\n{prompt}<|eot_id|><|start_header_id|>assistant<|end_header_id|>",
            "max_gen_len": 1024,
            "temperature": 0.7
        })
    )
    result = json.loads(response['body'].read())
    return result['generation']

Streaming Responses

def stream_claude(prompt: str):
    response = bedrock.invoke_model_with_response_stream(
        modelId='anthropic.claude-3-5-sonnet-20241022-v2:0',
        body=json.dumps({
            "anthropic_version": "bedrock-2023-05-31",
            "max_tokens": 1024,
            "messages": [{"role": "user", "content": prompt}]
        })
    )

    for event in response['body']:
        chunk = json.loads(event['chunk']['bytes'])
        if chunk['type'] == 'content_block_delta':
            yield chunk['delta']['text']

Embeddings with Titan

def get_embeddings(text: str) -> list:
    response = bedrock.invoke_model(
        modelId='amazon.titan-embed-text-v2:0',
        body=json.dumps({
            "inputText": text,
            "dimensions": 1024,
            "normalize": True
        })
    )
    result = json.loads(response['body'].read())
    return result['embedding']

Bedrock Knowledge Bases (RAG)

import boto3

bedrock_agent = boto3.client('bedrock-agent-runtime')

def query_knowledge_base(query: str, kb_id: str) -> str:
    response = bedrock_agent.retrieve_and_generate(
        input={'text': query},
        retrieveAndGenerateConfiguration={
            'type': 'KNOWLEDGE_BASE',
            'knowledgeBaseConfiguration': {
                'knowledgeBaseId': kb_id,
                'modelArn': 'arn:aws:bedrock:us-east-1::foundation-model/anthropic.claude-3-5-sonnet-20241022-v2:0',
                'retrievalConfiguration': {
                    'vectorSearchConfiguration': {
                        'numberOfResults': 5
                    }
                }
            }
        }
    )
    return response['output']['text']

Bedrock Agents

# Creating an agent programmatically
import boto3

bedrock_agent_client = boto3.client('bedrock-agent')

# Create agent
response = bedrock_agent_client.create_agent(
    agentName='customer-support-agent',
    foundationModel='anthropic.claude-3-5-sonnet-20241022-v2:0',
    instruction='''You are a customer support agent.
    Use the available tools to help customers with their orders.''',
    idleSessionTTLInSeconds=600
)

agent_id = response['agent']['agentId']

# Add action group (tools)
bedrock_agent_client.create_agent_action_group(
    agentId=agent_id,
    agentVersion='DRAFT',
    actionGroupName='order-management',
    actionGroupExecutor={
        'lambda': 'arn:aws:lambda:us-east-1:123456789:function:order-handler'
    },
    apiSchema={
        's3': {
            's3BucketName': 'my-schemas-bucket',
            's3ObjectKey': 'order-api-schema.json'
        }
    }
)

Amazon SageMaker

SageMaker for Custom Models

import sagemaker
from sagemaker.huggingface import HuggingFace

# Training job
huggingface_estimator = HuggingFace(
    entry_point='train.py',
    source_dir='./scripts',
    instance_type='ml.p4d.24xlarge',
    instance_count=1,
    role=sagemaker.get_execution_role(),
    transformers_version='4.36',
    pytorch_version='2.1',
    py_version='py310',
    hyperparameters={
        'model_name': 'meta-llama/Llama-3.1-8B',
        'epochs': 3,
        'learning_rate': 2e-5,
    }
)

huggingface_estimator.fit({'train': 's3://bucket/train-data/'})

SageMaker Endpoints

from sagemaker.huggingface import HuggingFaceModel

# Deploy model
hub_model = HuggingFaceModel(
    model_data='s3://bucket/model.tar.gz',
    role=sagemaker.get_execution_role(),
    transformers_version='4.36',
    pytorch_version='2.1',
    py_version='py310',
)

predictor = hub_model.deploy(
    initial_instance_count=1,
    instance_type='ml.g5.2xlarge',
    endpoint_name='my-llm-endpoint'
)

# Invoke
response = predictor.predict({
    "inputs": "What is machine learning?"
})

SageMaker JumpStart

from sagemaker.jumpstart.model import JumpStartModel

# Deploy foundation model from JumpStart
model = JumpStartModel(model_id="meta-textgeneration-llama-3-1-70b-instruct")
predictor = model.deploy()

# Use the model
response = predictor.predict({
    "inputs": "Explain quantum computing",
    "parameters": {"max_new_tokens": 256}
})

AWS AI Service Integration

Amazon Kendra (Enterprise Search)

import boto3

kendra = boto3.client('kendra')

# Query
response = kendra.query(
    IndexId='your-index-id',
    QueryText='What is our refund policy?',
    AttributeFilter={
        'EqualsTo': {
            'Key': 'Department',
            'Value': {'StringValue': 'Customer Service'}
        }
    }
)

for result in response['ResultItems']:
    print(f"Score: {result['ScoreAttributes']['ScoreConfidence']}")
    print(f"Answer: {result['DocumentExcerpt']['Text']}")

Amazon Comprehend (NLP)

comprehend = boto3.client('comprehend')

# Sentiment analysis
response = comprehend.detect_sentiment(
    Text="I love this product! It's amazing.",
    LanguageCode='en'
)
# {'Sentiment': 'POSITIVE', 'SentimentScore': {...}}

# Entity extraction
entities = comprehend.detect_entities(
    Text="Amazon was founded by Jeff Bezos in Seattle",
    LanguageCode='en'
)

Amazon Textract (Document AI)

textract = boto3.client('textract')

# Analyze document
response = textract.analyze_document(
    Document={'S3Object': {'Bucket': 'bucket', 'Name': 'invoice.pdf'}},
    FeatureTypes=['FORMS', 'TABLES']
)

# Extract key-value pairs
for block in response['Blocks']:
    if block['BlockType'] == 'KEY_VALUE_SET':
        # Process form fields
        pass

Architecture Patterns

Serverless AI Pipeline

┌─────────────────────────────────────────────────────────────────┐
│                  SERVERLESS AI ARCHITECTURE                      │
├─────────────────────────────────────────────────────────────────┤
│                                                                  │
│  API Gateway ──▶ Lambda ──▶ Bedrock                             │
│       │              │                                           │
│       │              ▼                                           │
│       │         DynamoDB (conversation history)                  │
│       │              │                                           │
│       │              ▼                                           │
│       │         S3 (documents)                                   │
│       │              │                                           │
│       │              ▼                                           │
│       │         OpenSearch (vector store)                        │
│       │                                                          │
│       └────────▶ CloudWatch (monitoring)                        │
│                                                                  │
└─────────────────────────────────────────────────────────────────┘

Enterprise RAG on AWS

# terraform/main.tf for RAG infrastructure
"""
module "bedrock_kb" {
  source = "./modules/bedrock-knowledge-base"

  name = "enterprise-kb"
  embedding_model = "amazon.titan-embed-text-v2:0"

  data_sources = [
    {
      type = "S3"
      bucket = aws_s3_bucket.documents.id
      prefix = "knowledge/"
    }
  ]

  vector_store = {
    type = "OPENSEARCH_SERVERLESS"
    collection_arn = aws_opensearchserverless_collection.vectors.arn
  }
}
"""

Pricing Optimization

Bedrock Pricing (per 1K tokens)

Cost Optimization Strategies

class BedrockCostOptimizer:
    MODEL_COSTS = {
        "claude-3-5-sonnet": {"input": 0.003, "output": 0.015},
        "claude-3-haiku": {"input": 0.00025, "output": 0.00125},
        "llama-3-70b": {"input": 0.00265, "output": 0.0035},
    }

    def select_model(self, task_complexity: str, max_cost: float = None):
        """Select most cost-effective model for task"""
        if task_complexity == "simple":
            return "claude-3-haiku"  # Cheapest
        elif task_complexity == "moderate":
            return "llama-3-70b"  # Good balance
        else:
            return "claude-3-5-sonnet"  # Best capability

    def estimate_cost(self, model: str, input_tokens: int, output_tokens: int):
        costs = self.MODEL_COSTS[model]
        return (input_tokens * costs["input"] + output_tokens * costs["output"]) / 1000

Security Best Practices

IAM Policies

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "bedrock:InvokeModel",
        "bedrock:InvokeModelWithResponseStream"
      ],
      "Resource": [
        "arn:aws:bedrock:*::foundation-model/anthropic.claude-3-5-sonnet*",
        "arn:aws:bedrock:*::foundation-model/meta.llama3*"
      ],
      "Condition": {
        "StringEquals": {
          "aws:RequestedRegion": ["us-east-1", "us-west-2"]
        }
      }
    }
  ]
}

VPC Endpoints

resource "aws_vpc_endpoint" "bedrock" {
  vpc_id            = aws_vpc.main.id
  service_name      = "com.amazonaws.us-east-1.bedrock-runtime"
  vpc_endpoint_type = "Interface"
  subnet_ids        = aws_subnet.private[*].id
  security_group_ids = [aws_security_group.bedrock.id]
  private_dns_enabled = true
}

Resources

• Amazon Bedrock Docs
• SageMaker Docs
• AWS AI/ML Blog
• Bedrock Pricing