Any good digital marketing agency should have a current and up-to-date website. If they are using good SEO practices, you should be able to find them easily on Google by searching for their core services and their geographic area.
The best way A great digital marketing agency is made up of a team of diverse talents and expertise. Check out their team can you see them online? A great agency will be proud of their team and will put them front and centre. They should be a multi-disciplined team, with unique experts in their respective fields design, development, SEO, content strategy, social media, brand development, etc.
Pay per Click includes paid search advertising. You can buy PPC (pay-per-click) ads, where you pay only when a user clicks on your ad, on search engines such as Bing or Google.