WRT Dynamodb the "25 Gb" free bit is not as useful as it might be because it's the Read and Write Units which might bite you and those are not directly related

WRT Dynamodb the "25 Gb" free bit is not as useful as it might be because it's the Read and Write Units which might bite you and those are not directly related to data size but are also affected by how you've structured your data. It does mention the bit about the Units on the click through but I'm just saying you want to drill down into these things when it's more subtle than "so much disk" or "that many minutes of EC2". I'm not bagging the whole thing by any means, it looks like a really useful list but some things are a lot easier to understand what you're getting for free than others.