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1. If linked with a LinkedIn partner(like Hubspot), it can update dynamically too. 2. Targeted company list along with more filters of relevant ICP renders the list too small to target in most cases unless list size post that is 10k+ (which is rare for most businesses)

+ to what Shubham said, 1. you could also set up a Zap if your tool doesn’t have an LI integration 2. Broader the audience, lower the cost - sacrifice the job role targeting to broaden the audience and get a bigger audience

1. Not through the campaign manager but you can apply for Linkedin developer program and do it via their API. See more info here. 2. Yes and No. Depends on what factors are you using to build that list. If you're just using firmographic and demographic data to make these lists you will get limited success but if you club this data with intent and behavioural data using tools like 6sense or Bombora, then you can make much smarter lists and improve your impact.

@Jayant Kaul, for part 2, can do audience enrichment with third party data. Seta Metamatch Audiences

Dynamic list > Static List - you should also create dynamic lists for exclusion. Yes start serving ads to company list mid way but I would say create a company level dashboard or engagement report using supermetrics or factors . This will gives you clear picture. And don't start conversational ads in parallel to SDR outbound emails. Use conversational ads as a last resort or for pipeline acceleration.

What is the Audience match list in Linkedin ?