What are the basics for business development for a digital/ad agency?

Start with the target approach method and resorces.

1) Team

2) Creative Edge agaisnt Competition

3) New Thought with reach

4) Sucess example with business result - Visible ROI to client

"Word of Mouth" Picks all through propogandist.

This is something that our agency has wrestled with for years and now we're in the process or revamping our entire marketing program. Here are a few core tactics we will be implementing consistently:1. Positioning - Have a very clear message about your specific expertise and demonstrate this via your work and case studies. For most agencies, they need to target an industry vertical (i.e. sporting goods brands) or develop depth within a discipline's niche (i.e. large scale eCommerce sites). Now, this isn't easy and it may take time for you to evolve but formulate a position and make plans to get there.2. Client Targeting - Who is your ideal client? Who lies at the center of the bulls-eye for you? It's important to define the type of client to whom you can best deliver value and in turn, can help you grow. Learning to say, "No" is probably one of the most important things an agency can do. Resist the temptation to take every project that comes knocking and evaluate how it can help you. Utilize the messaging on your website to talk about the kind of client you're looking for. In this way, your site helps serve as a filter.3. Networking - People do business with people they know. Target associations and events where prospective clients will be. Ask existing clients for referrals.4. Thought Leadership - Develop your blog so that it's a powerful resource for your audience. Don't make the blog all about you, that's not appealing to marketers who are looking for agencies who can help them grow their companies and organizations. Put your thinking out there. 85% of CMO's found their vendors, not the other way around according to a CMO survey done in 2008. 5. Consistency - You cannot expect to reap where you have not sown. You've got to be consistent with your efforts and build your market over time.

Pick a primary and secondary outbound marketing method and stick to it. Use an appointment setter, send eblasts, use social, buy ads, etc. Whatever - just go with methods that fit your budget. 

in simple words (blue marketing)

People! First you need to have creative and selfmotivated persons in you team! Second: speak with your team - always do it researching together! Belive in your team! Suport your guys to think outside of the box! And of course you need to have a plan, strategy, mision and vision! You need to have original ideas. Of course you have to know market and needs and to be ready to bring something new!