DevOps Intern Explains How Core Internet Protocols Power a Global Bookstore

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A DevOps micro-internship exercise used a fictional Finnish online bookstore called EpicReads to illustrate how fundamental internet technologies work together. Packet switching breaks data into small packets that travel independently across networks and are reassembled at the destination, keeping communication fast and resilient. IP addresses and the TCP/IP protocol suite handle device identification, routing, and reliable data delivery, while HTTP and HTTPS govern how browsers and servers exchange web pages, with HTTPS adding encryption for security. DNS translates human-readable domain names like epicreads.com into server IP addresses using A records, completing the chain. The exercise highlighted how these layered technologies hand off seamlessly to each other, forming the foundational knowledge required for effective DevOps troubleshooting.

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