A Company Is Using Amazon API Gateway to Manage Access

question 237

Multiple Choice

A company is using Amazon API Gateway to manage access to a set of microservices implemented as AWS Lambda functions. Following a bug report, the company makes a minor breaking change to one of the APIs. In order to avoid impacting existing clients when the new API is deployed, the company wants to allow clients six months to migrate from v1 to v2. Which approach should the Developer use to handle this change?

• A) Update the underlying Lambda function and provide clients with the new Lambda invocation URL.
• B) Use API Gateway to automatically propagate the change to clients, specifying 180 days in the phased deployment parameter.
• C) Use API Gateway to deploy a new stage named v2 to the API and provide users with its URL.
• D) Update the underlying Lambda function, create an Amazon CloudFront distribution with the updated Lambda function as its origin.

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Definitions:

Variable Cost

A variable cost changes in direct proportion to the level of production or activity in a business, such as materials and labor.

Marginal Cost

The additional expense incurred from generating one more unit of a product or service.

Total Fixed Costs

The total of all expenses that stay unchanged no matter the amount of production or output.

Average Variable Costs

The variable cost (e.g., labor, raw materials) per unit of output, calculated by dividing total variable costs by the quantity of output produced.