The main methods of requirements analysis are

Requirements analysis is a requirement" or "demand" for the customer to carry out in-depth research and analysis to accurately understand the user and the project's functionality, performance, reliability and other specific requirements.

Requirements analysis is a very important part of the project planning stage, the link decides what needs to be "realized" for the next step in how to "realize" provides a clear direction.

Requirements analysis needs to do the following:

(a) Requirements Acquisition: In the preparatory stage, we first need to determine the goal and scope of the requirements acquisition, according to your goal to choose the corresponding way to obtain the requirements.

(ii) Requirements categorization: Generally, we will categorize the requirements into business requirements, user requirements, functional requirements and so on according to the different objects.

(3) Requirements Screening: Some requirements are pseudo-requirements, while others do not have the value of realization, we can filter the requirements through the authenticity, value, feasibility of the three dimensions to filter out the false, infeasible, no value, not much value, or the input-output ratio of the demand is not ideal.

(4) Refinement of demand: The purpose of refining the remaining demand is to extract the essential needs of customers from the acquired surface demand. Finding out "why" is more important than "what".

(E) demand priority ordering: After digging into the customer's real purpose, we need to according to different dimensions of the demand categorization methods, such as KANO model analysis, input-output ratio ROI, etc., to summarize and prioritize, to help the product organized arrangement development order and avoid blind sorting.

(F) output requirements document: Through the above analysis, we need to analyze, summarize, and categorize the collected requirements, and output requirements document, to pave the way for the next work.

The above is some of the understanding of the requirements analysis and ideas, do a good job of analyzing the needs of the work, you can follow up on the achievable needs of the landing program.