Hold Billing is a feature of Salesforce Revenue Cloud that allows businesses to control when an order product is invoiced, based on certain criteria or events. By setting theHold Billing field toYes on an order product, the billing process is paused for that order product and all its usage summaries. This means that no invoice lines or invoice documents are generated for the order product until the hold is released. The holdcan be released by setting the Hold Billing field to No or null, either manually or automatically through a workflow or trigger. When the hold is released, Salesforce Billing will create an invoice as soon as possible, and include all the invoice lines that were accumulated during the hold period. This ensures that the customer is billed for the full amount of the order product, regardless of the hold duration. For example, if an order product has a monthly billing frequency and a hold billing period of twomonths, the first invoice after the hold will include three invoice lines: one for the current month and two for the previous months when the hold was active. References: 

https://help.salesforce.com/s/articleView?id=sf.blng_hold_billing.htm &language=en_US&type=5

https://trailhead.salesforce.com/users/officialblaze/trailmixes/revenue-cloud-get-started-with-billing

The Large Quote Experience is a feature of Salesforce Revenue Cloud that allows businesses to handle quotes with a large number of quote line items more efficiently and avoid platform governor limit issues. The Large Quote Experience optimizes the performance of the Quote Line Editor and the Quote Calculator by using asynchronous processing, caching, and pagination. By enabling the Large Quote Experience, businesses can improve the user experience and reduce the risk of hitting CPU time, heap size, or SOQL query limits when saving or calculating large quotes. The Large Quote Experience can be enabled by setting the CPQ Package setting for “Large Quote Experience” to True. The Large Quote Experience also requires the CPQ Package setting for “Quote Batch Size” to be set to a value between 50 and 200, which determines the number of quote line items processed in each batch. The optimal value for this setting depends on the complexity and configuration of the quote line items

The three common CPQ design mistakes to avoid while implementing CPQ for your customer are:

A. Using price book entries to handle attribute based variationsinstead of lookup price rules: Price book entries are not designed to handle attribute-based variations. Instead, lookup price rules should be used. These rules allow you to adjust pricing based on specific product attributes, providing more flexibility and accuracy1.

C. Creating process builders and flows to pass data between fields instead of using twin field mapping: Process builders and flows can be complex and difficult to maintain. Instead, twin field mapping should be used. This feature allows you to map fields between objects, ensuring data consistency and reducing the need for custom code1.

D. Writing customizations for product selection or validation instead of using option constraints, product rules, and bundles: Customizations can be time-consuming and costly to implement and maintain. Instead, Salesforce CPQ provides built-in features like option constraints, product rules, and bundles that can handle product selection and validation. These features are designed to enforce business rules and ensure that only valid product combinations are selected1.

For the user story concerning sales users' ability to create new quotes with established rate cards and account-specific discounts, the Salesforce objects that need to absorb legacy datainclude:

B. Contracted Pricing: This object is crucial for managing special pricing agreements that have been negotiated with specific customers. It ensures that the pricing on new quotes reflects the discounts and rates that were originally negotiated under specific contracts.

D. Entitlements: The Entitlements object manages the customer’s entitlements to support services or warranty conditions, which can be tied to the pricing or conditions stated in their original contracts.

These objects ensure that thecontractual terms and special conditions are respected in new transactions, maintaining consistency and honoring legacy agreements with customers.

In Salesforce CPQ, a bundle is a group of products that are known to be sold together. There are three types of bundles: static, configurable, and nested1. The bundle configuration is a significant part of CPQ, and it can make selling complex product offerings easier by providing sales reps with premade product bundles to choose from1. However, whether a customer needs a bundle configuration or not depends on their specific needs and preferences2. Therefore, it’s important to introduce the concept of bundle configuration as part of a CPQ project, but the decision to implement it should be left up to the customer2. References

Learn About Configuration in the Sales Process - Trailhead

Product Bundles in Salesforce CPQ - SkyPlanner