AWS IAM consulting that keeps every key on a short leash

AWS Identity and Access Management (IAM) controls who and what can use your AWS account. It holds the identities (users, groups and roles) and the policies that say which actions they may perform on which resources. Every request to an AWS API is checked against those policies before anything happens.

Yes. IAM users, roles, groups and policies come at no additional charge, and IAM Identity Center has no extra charge either. Some IAM Access Analyzer features are paid: in US East (N. Virginia), unused access analysis is $0.20 per role or user analyzed per month, internal access analysis is $9.00 per monitored resource per month, and custom policy checks are $0.0020 per API call.

Prefer roles. A role has no password or permanent key; whoever assumes it gets temporary credentials that expire. Lambda functions, EC2 instances, containers and CI pipelines should all use roles. IAM users with access keys are a last resort for systems outside AWS that cannot federate, and those keys should be narrow and rotated.

IAM is the permission engine inside each AWS account. IAM Identity Center sits on top and gives people one sign-in for all your accounts, using permission sets that it turns into roles in each account. It can use its own user directory or connect to an existing identity provider such as Microsoft Entra ID, Okta or Google Workspace.

Everything starts as denied. If any applicable policy has an explicit Deny that matches, the request is denied, full stop. Otherwise it needs a matching Allow, and in multi-account setups it must also fit inside service control policies, any permissions boundary and any session policy. A request that no policy mentions stays denied.

Something else is saying no. Common causes are a service control policy from AWS Organizations, a permissions boundary on the role, a bucket or KMS key policy that does not trust your role, a condition such as Region or MFA that the request fails, or the action needing a different resource ARN than the one in your policy. The error message often names the policy type that denied it.

Ideally they do not hold AWS credentials at all. Zoho CRM, Flow or Catalyst call an API Gateway endpoint, and a Lambda function with its own role does the AWS work. When a Zoho tool must read AWS directly, such as an Analytics import from S3, it gets a dedicated IAM user limited to one bucket prefix with keys rotated on a schedule.

For daily work, yes. Turn on MFA for the root user, delete any root access keys and keep the credentials somewhere only two trusted people can reach. A few tasks, like closing the account or changing some billing settings, still need root, so it should stay recoverable rather than forgotten.

The better question is whether the key needs to exist. Most can be replaced with roles. For the ones that stay, we rotate on a fixed calendar agreed with your team, alert on keys older than that, and use the credential report to catch keys that have not been used in months so they can be removed.

The first call is free. After it, the roles, permission sets, guardrails and Zoho connections we will build go into a BRD with one fixed price that you sign before work starts. Large multi-account estates may need a paid discovery phase first, quoted up front. IAM itself costs nothing on your AWS bill.