Cloud architecture involves breaking applications into smaller, independent services that communicate with each other, similar to building with LEGOs.
The focus is on clean separation of components for organization and scalability, akin to the cloud version of 'room design.'
Cloud architecture allows for running code on-demand without concerning oneself with servers, offering flexibility and efficiency.
The author shares their experience of understanding cloud architecture despite battling a sinus infection, comparing it to examining maps and connections in childhood.