How can one contribute towards cyber security ???​

Jessie has received a contract to build a real-time application for a baker. however, the baker doesn't want to invest too much money. his only requirement is that he wants the customers to know which cupcakes are available at what time and in what quantity. so his core requirement is that the details of product should be in real time. what platform can jessie use to develop this application?

An endless cycle of creation and response on the internet is called

What characteristic of long period comets suggest they come directly from the oort cloud?