In the days of cloud-hosted, microservice-based web applications, "architecture" in the infrastructural sense becomes less relevant. It's just a cloud server serving HTTP requests, having seamless access to vendor-provided elastic data stores, message queues, etc.

What remains relevant, though, is the "software architecture" – how you structure your data, what kinds of abstractions do you build over that data, is the data model suitable for the task at hand, etc.