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Hi,

Thanks for viewing my post.
I have got a project about developing a website for different user and I am required to draw architecture diagram.
Can anyone tell me or show me example of architecture diagram? I need to diagram my 3 tier architecture diagram (Data Layer, Business Logic Layer and Presentation Layer)

Please help! Thanks.

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A short, practical checklist to turn the 3-tier idea into a clear diagram (building on comment that there is no single right way). Since already found an example that works, the goal here is to make your diagram precise for reviewers: show what each layer owns, how data moves, and where you enforce security and scaling.

Start by defining actors and primary flows (user types, admin, API clients). Draw three horizontal or vertical boxes labeled Presentation, Business Logic, Data. Inside Presentation show clients, web servers, load balancer/CDN and indicate whether UI state is stored client-side or server-side. In Business Logic include app servers, API layer, auth/authorization, caches, and queues for async work. In Data show primary database, read replicas, blob/file storage and backups. Draw arrows for request/response and label synchronous vs asynchronous calls.

Represent multi-user concerns explicitly: map each user type to the sequence they trigger (login -> profile -> transaction), note where authorization checks happen, and mark session handling (sticky sessions vs stateless tokens). For data concerns show transactions, eventual-consistency paths (replication, caches), and any data partitioning. Add a security boundary (firewall/DMZ) and highlight TLS endpoints and sensitive-data stores.

Keep diagrams focused: produce a logical view for architecture reviewers and a separate deployment view showing servers, containers, load balancers, and network zones. Add a short legend, version/date, and a one-paragraph responsibilities list for each layer. For quick drawing use diagrams.net (draw.io) or your organization’s preferred tool, export PNG/PDF, and include the diagram in your documentation with the non-functional requirements it satisfies (scaling, HA, RTO/RPO).

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Member Avatar for hericles

There's no specified way to do that (as far as I know). Any diagram that indicates the various components and where they sit in relation to each other should be fine.
Just google 'n tier diagram' and you'll find plenty of examples.

commented: Thank You! +3
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