Best Possible Approach : Service Broker or replication?

I have a business scenario. I have an application whose DB resides on SQL Server A. My application resides on SQL server B. Both SQL servers are on the same network. Server A has a table that is being constantly updated via a web application. We want that
table to be on Server B. At present it is updated nightly from Server A to Server B.
We want the changes to be replicated to server B in almost real time. 30 minutes delay could work.
Now considering this business case what would eb my best options:
1. Implement CDC on server A for the interested table ( Please note that CDC is only for 1 table, I'm not sure if this is possible) . Bring the table from Server A once to Server B using a Linked Server. Then use the CDC from server A to Merge and Update
on table on Server b using a SP and Schedule this SP after 30 minutes.
OR
2. Use CDC and Service combination.
OR
3. use Replication.
OR ...???
Any help will greatly be appreciated.

Snapshot Replication is OK solution here. You would need to set the snapshot period to 30 min or less. If you want changes to get populated immediately use transactional replication. Service Broker is the best approach since you wouldn't
have to maintain infrastructures associated with establishing replication facility. But use of Service Broker will require some expertise. Also take a look at this product called SnipeDB framework SnipeDB.com SnipeDB framework would not replicate the
table, but would allow any subscriber application to get an update on any change in your data.

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Reading on the web, I have read in few places that certificates are not mandatory and that Windows Authentication only can be used. Then, I read that even if endpoints don't request certificates, the communication between two servers will still requires
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Service Broker Diagnostic Utility
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Is it ok to use the same windows account on each side, do they only need an 'Open' access rigth or do they need to be db_owner ?
Best regards,
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Hi Claude,
1.Can I use the setup as I defined, with no certificate ? Is it risky ?
Service broker does not have to use certificate. The Certificate is necessary when you want to use dialog security, by which you can encrypt all messages sent outside a SQL Server instance.
http://technet.microsoft.com/en-us/library/ms166036(v=SQL.105).aspx
2.Is there too many objects defined ? Is it mandatory to have a Route and a Remote Service Binding ?
Remote Service Binding is used to privde dialog security. If you donnot need the dialog security, the Remote Service Binding is not mandatory.
http://technet.microsoft.com/en-us/library/ms166042(v=SQL.105).aspx
By default, each database contains a route that specifies that messages for any service which does not have an explicit route are delivered within the SQL Server instance. Since you have communications between different instances, creating a route between
them is necessary.
http://technet.microsoft.com/en-us/library/ms166032(v=SQL.105).aspx
3.Is it ok to use the same windows account on each side, do they only need an 'Open' access rigth or do they need to be db_owner ?
The windows account must own the certificate used for authentication. You can find more information below.
http://technet.microsoft.com/en-us/library/ms166045(v=SQL.105).aspx
http://technet.microsoft.com/en-us/library/ms186278(v=sql.105).aspx
Best regards,

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In fact I was unclear, please let me provide you with more details.
Maybe the use of "always on" plays a role here... I will use different names so it might be clearer...
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Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
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