Amazon Technologies, Inc.

Kevin Fowler

Borislav Andruschuk

Noah Anthony Eisner

Nagesh Pradhan Cadabam

Sean Krishan Sharma

Wei Lien Stephen Dang

Chetan Rao

Access control for shared computing resources in a hierarchical system is provided herein. An as-needed, 'lazy evaluation' approach to access control is described in which an effective access control list for a computing resource is determined after a request is received from a user to access the resource. When resources are shared, access control policies are created and stored in association with the shared resource but are not stored in association with hierarchically related lower-level resources. When an access request for a resource is received, access control policies are collected for levels of a computing resource hierarchy that are higher than the hierarchy level of the resource. An effective access control list is determined based on permissions specified in the collected access control policies. The effective access control list represents an effective propagation of access control policies of higher hierarchy levels to the computing resource.

Hierarchical policy-based shared resource access control

Organizations maintain and generate large amounts of documentation and entities of these organizations often need to collaborate on generating and reviewing this information. There is a need to maintain and store this documentation remotely in such a way that the entities of these organizations may collaborate with each other. To ensure that entities of the organization can collaborate on documents, a document annotation service is described that converts a text-based document, such as a word processing document, to a fixed-layout document, such as a coordinate-based document. Annotations can be received on the fixed-layout document. The annotations can then be mapped to the text-based document and downloaded to a user for viewing.

Document annotation service

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Costa Mesa, CA, United States of America

Kevin Fowler