Rekognition

Find texts, objects, people and so on.
Used for face detection, Text detection, Labeling and so on.
Used for Content-moderation.

Transcribe

Speech to Text service.
Can be used to remove PII data.
Automatic Language Identitfication.

Polly

Used for text to speech service.

Feature

Lexicon
Lexicon can be used for pronunciation of words.
Can be used for Short Forms to Convert long forms.

Speech Synthesis Markup Language (SSML)
SSML can be use to define how the words should be pronounced.

Translate

Language translation.

Lex + Connect

Lex Overview

Automatic Speech Recognition
Used for chatbots and call center

Connect Overview

Used to Receive the phone calls and make connect with Lex to execute some actions based on the user speech.

Comprehend

Used for Natural Language Processing.
Serverless service.
Language to text.
Understand how positive or negative the text is and so on.
Can be used to comprehend medical informations.

SageMaker

Used to create machine learning models.

Kendra

Managed service powered by machine learning.
Natural Language Search Capabilities.
Can learn from user which file the user prefer most and so on.(incremental learning)
Fine-tune search results.

Personalized

Managed machine learning personalization recommendation model.

Textract

Extract text from the images.
Extract data in form of tables.