Azure Log Analytics Basic vs Analytics Plan Cost Implications
Short answer
Select 'Log queries' for Increase costs and 'Ingestion' for Reduce costs. The Basic plan charges per query but has lower ingestion rates.
Question
You have an on-premises network.
You have an Azure subscription.
You plan to centralize the collection and analytics of Azure and on-premises resources by using Log Analytics.
You are evaluating the cost implications of using the Basic log data plan versus the Analytics log data plan.
What will increase costs by using the Basic log data plan, and what will reduce costs by using the Basic log data plan? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Key Takeaways
The question tests the distinction between data volume costs (ingestion) and compute costs (queries), with the common trap being assuming queries are always free or ingestion is always cheaper.
This scenario evaluates the cost trade-offs between Azure Monitor's Basic and Analytics log data plans. The page establishes that while the Basic plan reduces ingestion costs, it increases query costs due to pay-as-you-go pricing.
Common mistake: Learners often incorrectly select 'Query' as a cost reducer because they assume the Basic plan is strictly cheaper overall, failing to realize that interactive KQL queries incur specific per-query fees in the Basic tier.
Expert Analysis
Why the Answer Is Correct
In the Azure Monitor pricing model, the Analytics plan offers a high ingestion base rate but includes unlimited, free interactive KQL log queries. Conversely, the Basic plan drastically lowers the ingestion price per GB but charges a pay-as-you-go fee for every log query executed. Therefore, using the Basic plan will reduce costs associated with Ingestion but will increase costs associated with Log Queries.
Why Other Candidate Answers Are Wrong
Selecting 'Query' under 'Reduce Costs' is incorrect because the Basic plan explicitly monetizes query execution. Selecting 'Ingestion' under 'Increase Costs' is incorrect because the primary financial advantage of the Basic plan is its lower ingestion rate compared to the Analytics plan.
Community Comment Notes
Community consensus correctly identifies this trade-off. As noted by user AllanHouston, "In the standard Analytics plan, running interactive KQL log queries is completely free... in the Basic plan, you are billed a pay-as-you-go fee every single time you execute a search." Another commenter emphasized that "The bulk of logging expenses comes from data ingestion... whilst the Basic tier drastically slashes" these costs.
Official Reference
https://learn.microsoft.com/en-us/azure/azure-monitor/logs/data-retention-configure
This link opens the official vendor documentation in a new tab.
Exam Strategy
When designing monitoring solutions, always weigh the ratio of data ingestion volume against the frequency of ad-hoc querying. If users perform many daily interactive queries, the Analytics plan may be more cost-effective despite higher ingestion rates.
Frequently Asked Questions
Is KQL querying free in Azure Monitor Basic?
Which plan is better for high-volume ingestion?
Discussion 1 contributions
Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.
From public community threads 1
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AllanHouston 👍 1Increase costs: Log queries. In the standard Analytics plan, running interactive KQL log queries is completely free. However, in the Basic plan, you are billed a pay-as-you-go fee every single time you execute a search or query. Reduce costs: Ingestion. The bulk of logging expenses comes from data ingestion. The Analytics tier has a high ingestion base rate whilst the Basic tier drastically slashes this base rate down to a much cheaper rate.
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