AWS module to use for a web-based interface to control IOT devices

I have integrated my IoT devices on LoRa WAN network with AWS IoT services. So data sent by devices are ending up nicely in a Dynamodb database within AWS. Now trying to create a user interface for devices so they can be controlled or reset via downlink communication, via “Shadow Device” and MQTT, but I need to invoke this process by coding, I assume in Python or Java in a web-based application, so I can send the downlink data. Which web-services or web development module in AWS is suitable for this user interface to control IOT device?