when we need to use App Service Environment and when it's possible to use App Service public multitenant?

Question

any use case please ? or a link /training for help ?

Answer 1

Thanks for posting your question in the Microsoft Q&A forum.

Use ASE when your application requires:

• High Security and Isolation
• Network Access Control
• High Scale and Performance
• Custom Domain and Certificate Requirements
• Internal Line-of-Business Applications

Use the public multitenant App Service when:

• Standard Security and Compliance Are Sufficient
• Cost Efficiency
• Fast Scaling
• General Web and API Hosting

---

Please don't forget to close up the thread here by upvoting and accept it as an answer if it is helpful

Answer 2

Hi @Amira Ben Aissia,

Choosing between App Service Environment (ASE) and the public multitenant App Service depends primarily on networking, security, scaling, and compliance needs.

Use Azure App Service (Public Multitenant) When:

• You're building typical web apps, APIs, or mobile backends and want a fully managed, cost-effective solution.
• You don't require isolation at the network level; the app can run in a shared hosting environment securely.
• Your application can communicate securely over public internet (with TLS/SSL) and doesn’t need private VNet access.
• You need fast setup and scaling for web workloads with minimal complexity.
• You're hosting apps that meet general security/compliance needs without needing network traffic restrictions.
• Your goal is cost optimization; this is much cheaper than ASE.

Reference:
Azure App Service Plans – Overview
Networking features in App Service

Use App Service Environment (ASE v3) When:

• You need full network isolation for your apps, all traffic in and out should flow entirely through your Azure Virtual Network (VNet).
• You must restrict inbound or outbound traffic (e.g., allow only certain IP ranges or connect securely to on-premises networks).
• You're working in highly regulated industries (e.g., financial services, healthcare, government) requiring dedicated environments and advanced compliance.
• You need internal load-balanced endpoints (e.g., internal apps not exposed to the public internet).
• You expect to host a large number of high-scale apps and want dedicated compute and isolation.
• You need custom domain names with private IPs, or integration with Azure ILB.

Reference:
What is App Service Environment v3

Difference between App Service Environment (ASE) and the public multitenant App Service:

Feature	Public Multitenant App Service	App Service Environment (ASE)
Cost	Lower	Higher (Dedicated)
VNet Integration	Partial (via Regional VNet Integration or Private Endpoints)	Full (injected into your VNet)
Isolation	Shared	Full network and compute isolation
Scalability	High	Very High (with dedicated infra)
Compliance/Security	Standard	Enterprise-grade
Inbound Traffic Control	No (only via IP restrictions)	Yes (NSGs, firewalls, ILB apps)
Internal apps only (no internet access)	Not possible	Fully supported

If the answer is helpful, please click Accept Answer and kindly upvote it so that other people who faces similar issue may get benefitted from it.

Let me know if you have any further Queries.