A visible page may contain public information, personal information, copyrighted material, restricted sections or technical controls. The client must establish the authority and purpose for collection before scale is considered.
The data map identifies entities, fields, units, variants and page relationships. Product lists, detail pages, filters and pagination can each contribute different facts. Stable identifiers are preferred over page position or visual similarity.
Websites change. Selectors break, labels move and content can become client-rendered or inaccessible. Recurring work includes drift checks, sample comparison and a clear failure status so missing output is not mistaken for a real market change.
eCommerce
Real Estate
Business Directories
Jobs and Training
Industrial Catalogues
Market Research