[wyaeld]

Good teams still document these. Amazon is apparently a leading example where the documents are considered the source of truth.

However many organisations have limited technical leadership enforcing quality, and management layers not willing to invest in these assets.

Unfortunately some 'modern' practices are being interpreted to make the processes like Agile the most important thing, and reducing the importance of things like code/system quality and knowledge management.

Having a good technical writer pays dividends