The Architect should recommend scheduling workflows at different start times to avoid overloading the system with too many workflows running concurrently. This will help to distribute the load and avoid bottlenecks. Additionally, the Architect can recommend restarting the pending workflows to ensure that they are not stuck in a pending state and can continue to execute.

Applying an index on the Location attribute of the Reservation table can improve the query performance and reduce the return time. An index allows the database engine to quickly locate the data without having to scan the entire table. This can be especially useful when working with large tables with a high volume of data.

It's also important to consider that the other options might not provide a long-term solution for the problem.

References:

• Indexes in SQL databases:https://www.postgresql.org/docs/9.1/indexes.html
• Database indexing:https://en.wikipedia.org/wiki/Database_indexing

Hybrid hosting allows for a combination of on-premises and cloud-based hosting, which allows for the flexibility to keep sensitive data on-premises while leveraging the scalability and cost-effectiveness of cloud-based hosting for non-sensitive data.

Managed Service (hosted) allows the retailer to outsource the management and hosting of the Adobe Campaign Classic to a third-party service provider. This provider should have the capability to connect with Teradata, which would allow the retailer to avoid the production and movement of flat files.