A user pool set to "MFA: Required" can still let clinicians in on a password alone. This is a practical guide to Cognito MFA for healthcare apps: why federated users bypass enforcement, how the account recovery collision locks people out, why required MFA and adaptive authentication cannot coexist, and how to make session lifetimes match what your documentation claims.
Most accounting-firm document vaults do not fail at the bucket. They fail at the edges: a download link that outlives the engagement, a KMS key policy as wide as the bucket policy, a retention lock that cannot be undone, and an audit trail nobody switched on. Six failure families, and the control that closes each.
A confident answer with a citation from a matter the reader was walled off from. Nothing crashed, nothing alerted. Building legal document intelligence on AWS with Textract, Bedrock and OpenSearch is the easy half; the hard half is tenant isolation, verified deletion, S3 Object Lock holds, what leaves the account, and an audit trail that names the actual user.
Most as-planned vs as-built analysis compares the baseline to the last P6 update and calls the result an as-built. It isn't one. This is how to build the data layer underneath a delay analysis: versioned XER ingestion, activity identity across renumbering, a first-appearance table that proves when every actual date entered the record, calendar-safe float, and record linking that proposes candidates instead of asserting cause.
A layer-by-layer architecture for a construction dispute intelligence platform: hashed intake and immutable originals, OCR with page coordinates, a versioned Primavera P6 schedule plane, an event model that joins documents to activities, hybrid retrieval on pgvector, and a generation layer bounded by human confirmation. Written around what each layer prevents.
A working engineer's guide to HIPAA compliance on AWS, organised by the gap between the control you configured and the obligation you actually carry. Covers BAA account scope, the eligible services list as a contract boundary, KMS key policy versus the encryption checkbox, what "six years" really applies to, backup and restore scope, and the subprocessor chain nobody inventories.