Great for

• Link calls to every touchpoint with detailed AdWords reporting
• Simple set up, requires a small piece of JavaScript
• Link sales value to the phone call for more accurate ROI analysis
• Leverage attribution models to understand and measure which campaigns have proven most important to the customer journey
• Include call conversions in your analytics, to manage your campaigns using more accurate data
• Link offline channels including broadcast media and print to phone sales, through dedicated campaign phone numbers

Be aware that

• Designed for medium to large scale companies