Topic 1, Contoso, Ltd
Planned Changes
Contoso plans to implement the following changes:
* Migrate the payment processing system to Azure.
* Migrate the historical transaction data to Azure Cosmos DB to address the performance issues.
Migration Requirements
Contoso identifies the following general migration requirements:
Infrastructure services must remain available if a region or a data center fails. Failover must occur without any administrative intervention
* Whenever possible. Azure managed serves must be used to management overhead
* Whenever possible, costs must be minimized.
Contoso identifies the following requirements for the payment processing system:
* If a data center fails, ensure that the payment processing system remains available without any administrative intervention. The middle-tier and the web front end must continue to operate without any additional configurations-
* If that the number of compute nodes of the from -end and the middle tiers of the payment processing system can increase or decrease automatically based on CPU utilization.
* Ensure that each tier of the payment processing system is subject to a Service level Agreement (SLA) of 9959 percent availability
* Minimize the effort required to modify the middle tier API and the back-end tier of the payment processing system.
* Generate alerts when unauthorized login attempts occur on the middle-tier virtual machines.
* Insure that the payment processing system preserves its current compliance status.
* Host the middle tier of the payment processing system on a virtual machine.
Contoso identifies the following requirements for the historical transaction query system:
* Minimize the use of on-premises infrastructure service.
* Minimize the effort required to modify the .NET web service querying Azure Cosmos DB.
* If a region fails, ensure that the historical transaction query system remains available without any administrative intervention.
Current Issue
The Contoso IT team discovers poor performance of the historical transaction query as the queries frequently cause table scans.
Information Security Requirements
The IT security team wants to ensure that identity management is performed by using Active Directory. Password hashes must be stored on-premises only.
Access to all business-critical systems must rely on Active Directory credentials. Any suspicious authentication attempts must trigger a multi-factor authentication prompt automatically. legitimate users must be able to authenticate successfully by using multi-factor authentication.