Gerald is the product manager for LaughItUp.com, a website for comedians. Earlier this year, many comments in site feedback complained about poor responsiveness. Working with the site marketing and development teams, Gerald created a plan where the site responsiveness metrics couldn't fall below a certain level. Which plan type is Gerald's plan?

Gerald's plan is a performance budget because it sets a quantifiable limit on a performance metric (responsiveness) that the website must adhere to. This budget acts as a constraint, ensuring that new features or changes do not degrade the user experience below an acceptable level. A performance plan is too general; while Gerald's plan is a type of performance plan, "performance budget" is the specific and most accurate term. A speed plan and speed threshold are too narrow, focusing only on speed, whereas responsiveness encompasses more than just raw speed, including elements like interactivity and visual stability.