What are the advantages and disadvantages of implementing a three-tier architecture in systems?

The three-tier architecture divides the system into three layers: presentation (UI), business logic, and data.

Advantages:

• Clear separation of responsibilities, which simplifies maintenance and development.
• Increased scalability: each layer can be scaled independently.
• Improved security: data access is mediated through business logic.

Disadvantages:

• Increased complexity of development and configuration.
• Possible performance reduction due to inter-layer communication.
• Requires more careful design and testing.

This approach is well-suited for large systems with long-term support and scalability needs.