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express server can build an API-server & write the functions for each route to respond each of them.
same fynctionality can be done by Lambda & API-Gateway services.
by logging tools or tests
this API that will can create it without writing any line of codeing, and will run without thinking of maintaining server.
an action that when happaen will run a function to do something.
Dynamo is AWS NoSql database service. Mongo is a service that uses MongoDB service.
SNS is a distributed publish-subscribe system. Messages are pushed to subscribers as and when they are sent by publishers to SNS. SQS is distributed queuing system. Messages are not pushed to receivers.
SNS is a distributed publish-subscribe service.
SQS is distributed queuing service.
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SQS and SNS Basics vid
AWS SQS vs SNS