Which is an expansion of Waterfall. <a href="https:&#x2F;&#x2F;upload.wikimedia.org&#x2F;wikipedia&#x2F;commons&#x2F;e&#x2F;e8&#x2F;Systems_Engineering_Process_II.svg" rel="nofollow">https:&#x2F;&#x2F;upload.wikimedia.org&#x2F;wikipedia&#x2F;commons&#x2F;e&#x2F;e8&#x2F;Systems_...</a>