The IT Department of a retail business launched an online shopping initiative. Buyers and learners were consulted in the initial phase of the project and gave input into how they saw the e-commerce platform working. Buyers were particularly concerned with ensuring a good experience for customers. The platform was developed in-house to save costs, and contractors were brought in to complete the platform. However, after the initial consultation phase, the buyers and cleaners had minimal involvement in the project. The online platform has been launched, and feedback from both internal customers (buyers or planners) and external customers has been negative. The platform is not user-friendly to customers, and buyers are unable to update the system without having to make a request to the IT Department. According to the balances, which perspective was not taken into consideration? Choose the correct answer: 1. Financial perspective, 2. Internal business perspective, 3. External business perspective, 4. Customer perspective, 5. Innovation and learning perspective.