AWS introduced Lex as an interface by the use of which we can make an application conversational over text and voice inputs.
Lex uses the same conversational engine which is used by Amazon Alexa which gives developers a platform to deploy sophisticated and natural language chatbots in their own applications.Using natural language understanding (NLU) and automatic speech recognition (ASR) Lex gives deep flexibility and functionality in an application such that it provides life like results and meaningful interactions.
Chatbots can be easily made by developers using Lex. No expertise on deep learning is required to create a bot, we just are specific with the basic flow of conversation in the Lex console. Dialogues are managed automatically and the responses in the conversation are dynamically adjusted. By the use of Lex console, we can create chatbots which can give response to text and voice feeds. If you are satisfied with testing then you can add the conversational interfaces to bots on Web applications, mobile phones, and chat platforms.
Lex is equipped with pre-built integrated AWS Lambda. Amazon Mobile Hub, AWS Cognito, Amazon CloudWatch, and Amazon DynamoDB can also be integrated with Lex. Lambda integration gives bots links to pre-built serverless enterprise connectors to interconnect data in SaaS (Software as a Service) applications for example Salesforce.
Advantages of Amazon Lex :
Easy to use
Using Lex console we can crate own chatbot in a minute by following simple steps. All you need to give simple phrases and Lex constructs a complete natural language model through which chatbots understands voice and text inputs. You can ask questions and get answers.
Deep learning simplified
Lex is powered by same technology which is used in Alexa. By the use of Lex ASR (Automatic Speech Recognition) and NLU (Natural Language Processing) technologies integrates to create a Speech Language Understanding (SLU) system. SLU powers Lex to understand natural language inputs and provides an out to give your business a new domain.
On of the most challenging problem to computer science is understanding and deploying speech recognition and natural language processing which requires huge data and integrated infrastructure on which sophisticated deep learning algorithm need to be implemented. Lex gives an opportunity to developers to have an access to deep learning technology, same technology as Alexa. The intelligent response is generated by chatbots by understanding voice and text inputs by the user, different bots can be made as per user requirements. A new category of products is defined by the use of conventional interfaces by different users.
Easy to deploy and scale
By using Amazon Lex console, you can build, test, and deploy your chatbots. Mobile devices, web applications, and chat services use Lex to easily configure chatbots for voice and text recognition. Hardware is provisioned and infrastructure is managed to empower your bot as Lex scales them automatically.
Integrated AWS platform
“AWS services like Amazon Cognito, AWS Lambda, Amazon CloudWatch and AWS Mobile Hub are portable on Lex. The integration of the AWS platforms gives you an advantage for important purpose like storage, business logic, user authentication, monitoring, security, and mobile app development.
Lex gives you an opportunity to learn without any upfront cost or minimum fees. Only requests of text and speech are chargeable. Features like pay as you go pricing and cost as per request makes conversational interface cost effective. You can use Lex without any investment as it provides the free allowance for a period of time.
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