Learn in the textbookSecurity Policy and Management Activities
DefinitionContinual improvement (継続的改善) means not treating a management system as finished once it is built, but repeating the PDCA cycle of plan, do, check and act to make it a little better each time.
ExplanationPDCA stands for Plan, Do, Check and Act, and the fixes decided in Act feed into the next Plan so the cycle keeps turning. An ISMS is built on this idea, with management at the top and the whole organization taking part. Each turn updates the measures to match new threats and changes in the business.
AnalogyIt is like a school sports team's practice matches: plan the tactics, play the game, review the video, adjust the training, and repeat every time.