Final answer:
Moving from 2-tier to 3-tier architectures provides scalability and better resource utilization by separating the business logic, but it also increases complexity, cost, and potential security risks.
Step-by-step explanation:
When moving from 2-tier to 3-tier architectures, there are several advantages and drawbacks to consider. One of the main advantages is the scalability that a 3-tier architecture provides, allowing for future expansion and management of each layer independently. This can lead to better resource utilization and potentially enhanced performance, as business logic is separated from the user interface and data storage layers.
However, one of the main drawbacks is increased complexity in system design, development, and maintenance. This could manifest as longer development time and higher costs. Additionally, as systems become more complex with additional tiers, they may face security risks and vulnerabilities. Careful planning and investment in security measures are essential to mitigate these risks, but they also add to the cost and effort required to maintain the system. Despite these challenges, the benefits of improved organization, flexibility, and scalability often make 3-tier architectures a desirable choice for growing and dynamic applications.