Here are some key considerations on using CPM (cost-per-thousand impressions) advertising for online businesses:

• CPM focuses on volume of impressions, rather than clicks or conversions. It can help enhance brand awareness and reach.
• The cost is predictable since you’re paying for impressions upfront. However, there’s no guarantee that high impressions will translate into sales.
• CPM tends to be more affordable than CPC, enabling smaller budgets to get in front of larger audiences.
• With CPM, ad placement and audience targeting are crucial. Reaching the right audiences that align with your brand is key.
• CPM works best for brand building goals rather than direct response. Strong creative and engaging content is needed.
• Tracking metrics like impressions, click-through rate, engagement rate, and conversion rate is important to optimize efforts.
• CPM is commonly used for display, native, video and social media ads. It may be too unpredictable for search ads.
• CPM requires a minimum ad budget and is less customizable in targeting compared to CPC.

Overall, CPM advertising can effectively raise awareness and reach for online brands if crafted thoughtfully and targeted at the right audiences. It works best when integrated into the marketing mix with other tactics focused on conversions. I’d recommend exploring options with a digital marketing agency.