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Implementation is the process that turns strategies and plans into actions in order to accomplish strategic objectives and goals. It is the part of the process where software engineers actually program the code for the project. This approach maximises the chances of delivering on the customers’ expectations for a fully functional solution through four common methods. Here are their pros and cons: (using a table for pros and cons for each method is recommended) A-Parallel: When the new system is used at the same time as the old system the two systems are said to be running in parallel. Advantages: 1-Users can can compare the output of the old system with the output of the new system, to ensure correctness. 2-There is a little risk of data loss because the known-good system is running. Disadvantages: 1-Users must take more time to enter data into two different systems 2-Data can differentiate in two different systems if there is intensive data entry. B-Phased: When small parts of the new system gradually replace small parts of the old system, the implementation method here is phased. Advantages: 1-Training can be completed in small parts. 2-A failure of the new system has minimal impact because it is only a one small part. 3-Issues around scale can be addressed without major impact. Disadvantages: 1-This implementation method takes more time to get the new system fully online than other methods. 2-There is a possibility of data loss if a part of the new system fails. C-Pilot: It is said when a small group of users within an organization uses a new system prior to wider use. Advantages: 1-Training can be supported by pilot group. 2-Failure or problems can be identified and addressed without wide-spread impact to the organization. Disadvantages: 1-In a pilot, issues of scale can cause problems. For example, the system might work well for 10 users, but not for 1000. D-Direct: When a new system is implemented without any phased or pilot implementation, it is said to be direct. The old system is retired, and the new system goes live. Advantages: 1-If the system is not critical, this can be a good method for implementation. Disadvantages: 1-If you are not sure the system will work, this method of implementation may not be a good idea. The integration approach has a different goal in mind. The goal of implementation is deployment whereas the goal of integration is full business functionality. Integration in software engineering means combining software parts (so-called subsystems) into one system. Integrated systems demonstrate better performance comparing to the sum of all independent ones. Implementing an integration solution eliminates the need to manually enter data across various software, saving time, labor costs, and reducing the risk of human error. This open network of data sharing enhances communication throughout a company's departments, optimizing operational efficiency.