Forms that are partially completed can be picked up where they were left when the respondent returns using the same device and browser.
Partial completions are stored using the local storage of a user's browser. This gives the respondent the benefit of making your form easier to complete, whilst also protecting their privacy.
Partial completion data is not stored in Engagement Cloud.
Local storage is a feature of modern web browsers. From a legal perspective it is considered to be under the same law as cookies.