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PaaS would address your needs, but the overall answer would be that it really depends on your workloads that will be migrating to the cloud and what is best for your business.<br />
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<a href="https://www.bmc.com/blogs/saas-vs-paas-vs-iaas-whats-the-difference-and-how-to-choose/" rel="ugc">https://www.bmc.com/blogs/saas-vs-paas-vs-iaas-whats-the-difference-and-how-to-choose/</a><br />
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With regards to the cost, it would depend on how many different PaaS solutions that you will be taking advantage of within AWS. Are you only doing serverless compute with a very low, infrequent execution times? Or are you going to have an incredibly complex solution that interweaves multiple PaaS solutions across multiples regions?
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PaaS would address your needs, but the overall answer would be that it really depends on your workloads that will be migrating to the cloud and what is best for your business.

https://www.bmc.com/blogs/saas-vs-paas-vs-iaas-whats-the-difference-and-how-to-choose/ [https://www.bmc.com/blogs/saas-vs-paas-vs-iaas-whats-the-difference-and-how-to-choose/]

With regards to the cost, it would depend on how many different PaaS solutions that you will be taking advantage of within AWS. Are you only doing serverless compute with a very low, infrequent execution times? Or are you going to have an incredibly complex solution that interweaves multiple PaaS solutions across multiples regions?

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Is PaaS the best solution for migrating 3 tier application into the the cloud??<br />
We need to keep cost down and be able to host testing environments for developers and be able to update test and deploy changes multiple times per day even during peak hours with good rollback plan if something goes wrong<br />
Thanks<br />
Robert
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Is PaaS the best solution for migrating 3 tier application into the the cloud??
We need to keep cost down and be able to host testing environments for developers and be able to update test and deploy changes multiple times per day even during peak hours with good rollback plan if something goes wrong
Thanks
Robert

Is PAAS best for low cost migration to the Azure cloud

Cloud computing, also known as on-demand computing, is a kind of Internet-based computing where shared resources and information are provided to computers and other devices. It is a model for enabling ubiquitous, on-demand access to a shared pool of configurable computing resources. Cloud computing and storage solutions provide users and enterprises with various capabilities to store and process their data in third-party data centers, relying on sharing of resources to achieve coherence and economies of scale.

Cloud Computing

Cloud services are services made available to users via the Internet from a provider's servers. Cloud services are designed to provide easy, scalable access to applications, resources and services, and are fully managed by a cloud services provider. It is a model for enabling ubiquitous, on-demand access to a shared pool of configurable computing resources. Frequently offered cloud services are infrastructure-as-a-service (IaaS), desktops-as-a-service (DaaS), software-as-a-service (SaaS) and platform-as-a-service (PaaS). Examples of cloud services include online data storage and backup solutions, Web-based e-mail services, hosted office suites and document collaboration services, database processing, managed technical support services and more.

Cloud Services

Microsoft SQL Server is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.SQL Server is available in multiple versions, typically identified by release year, and versions are subdivided into editions to distinguish between product functionality. Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning.

Microsoft SQL Server

Microsoft Azure is a cloud computing platform and infrastructure for building, deploying and managing applications and services through datacenters. It provides both platform-as-a-service (PaaS) and infrastructure-as-a-service (IaaS) services and supports many different programming languages, tools and frameworks, including both Microsoft-specific and third-party software and systems. Cloud Services is a PaaS environment and can be used to create scalable applications and services; there are specific software development kits (SDKs) provided by Microsoft for Python, Java, Node.js and .NET. Azure also has file and storage services, data management, analytics and DNS services.