Quick answer
Treat Performance Max as an automation layer, not a strategy. The campaign can access multiple Google surfaces, but the business still needs a clear customer objective, useful assets, sensible audience signals and reliable conversion actions.
The question is not whether it can generate conversions. It is whether it can generate the right conversions at an economically sustainable customer acquisition cost.
What I would check first
Audit the conversion actions included for optimization, the share of conversions that become qualified opportunities or customers, the landing pages used and the asset coverage for each offer.
Separate brand and non-brand demand, check location settings and validate performance against CRM or revenue outcomes wherever possible.
Decision framework
Use Performance Max when the business has reliable conversion signal, enough demand and a willingness to evaluate performance beyond platform-reported volume. Use tighter Search structures when query-level control is the immediate priority.
Automation cannot repair a form that counts spam, an offer that does not convert or a sales process that never closes leads.
Implementation steps
Start with one clearly defined business goal, exclude low-value actions from primary optimization, provide complete creative assets, document audience signals and establish a baseline before major changes.
Review available search-category, placement and asset insights, then validate outcomes downstream. Keep a change log.
Common mistakes and current platform considerations
Do not optimize toward every micro-event, judge success on conversion count alone, upload weak creative, change budgets constantly or assume automation removes the need for exclusions and quality review.
Google's automation direction makes first-party conversion quality more important. Enhanced conversions and offline quality feedback can improve bidding signals when implemented correctly.
Measurement and business implications
Report delivery metrics separately from qualified leads, purchases, customer value and contribution margin. Use the Google Ads Performance Calculator and Lead Value Calculator alongside the beginner and budgeting guides.