Communication happens at many points along the design process, but sharing research findings with your team, which may include both designers and developers, is a key step.
Share your research and make people WANT to read it
Different companies have different approaches for sharing findings, and often you may want to create a couple versions of the same information in different formats in order to get it to the people who need to see it. You may also create multiple formats with the same "audience" in mind, because everyone responds differently to information (some people love spreadsheets, while others want bullet points, and others a visual representation) . Here's a sampling of ways you may want to share what you've uncovered with your team:
On a Slack channel
Posters in the office
Presentation (emailed or presented in person)
The way you compile and share your research is likely something you'll want to continually be working on refining and experiment with in order to communicate as effectively as possible. You want to capture the attention of your audience and get your key points across quickly and clearly. You also may want to consider including a bit of background or history of the project, or story to help contextualize what you're sharing.
What's most important is that you show actionable insights or recommendations, NOT raw interviews. By the time you're sharing information with the wider team, you should have already completed your analysis.
Real world examples
Steve Portigal's podcast Dollars to Donuts highlights people who work in user research, revealing valuable insights and inspiration in the way researchers work. For his first episode he invited user and product researcher Gregg Bernstein, who spent several years running research at MailChimp [newsletter service]. In the episode (which is also available in transcript form) Gregg discusses all the different ways his team shares their research from emails to Evernote, and creative posters of personas.
MailChimps fun twist on personas to hang around the office. Click here to see full sized.
Gregg Bernstein has kept up his philosophy of getting his research in front of as many team members as possible with his new job at Vox Media (which he wrote about for their blog). He also shares additional resources on his website.
The design research studio STBY created a highlight's video to help make road safety issues a bit more real. While it's a low budget video, it is very effective of SHOWING the key issues, rather than just TELLING you what the problems are. Whenever you share your research findings, strive to bring the issues you uncovered to life for those who were not with you to see it for themselves. Note too how the video ends by highlighting an opportunity.
Safety on the road video. Note how all the research was compiled into a brief, succinct video with key ideas. [2:10 min]